// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//
// Tests for Google Test itself.  This verifies that the basic constructs of
// Google Test work.

#include "gtest/gtest.h"

// Verifies that the command line flag variables can be accessed in
// code once "gtest.h" has been #included.
// Do not move it after other gtest #includes.
TEST(CommandLineFlagsTest, CanBeAccessedInCodeOnceGTestHIsIncluded)
{
    bool dummy = testing::GTEST_FLAG(also_run_disabled_tests)
                 || testing::GTEST_FLAG(break_on_failure)
                 || testing::GTEST_FLAG(catch_exceptions)
                 || testing::GTEST_FLAG(color) != "unknown"
                 || testing::GTEST_FLAG(filter) != "unknown"
                 || testing::GTEST_FLAG(list_tests)
                 || testing::GTEST_FLAG(output) != "unknown"
                 || testing::GTEST_FLAG(print_time)
                 || testing::GTEST_FLAG(random_seed)
                 || testing::GTEST_FLAG(repeat) > 0
                 || testing::GTEST_FLAG(show_internal_stack_frames)
                 || testing::GTEST_FLAG(shuffle)
                 || testing::GTEST_FLAG(stack_trace_depth) > 0
                 || testing::GTEST_FLAG(stream_result_to) != "unknown"
                 || testing::GTEST_FLAG(throw_on_failure);
    EXPECT_TRUE(dummy || !dummy); // Suppresses warning that dummy is unused.
}

#include <limits.h> // For INT_MAX.
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include <map>
#include <vector>
#include <ostream>
#if GTEST_LANG_CXX11
#include <unordered_set>
#endif // GTEST_LANG_CXX11

#include "gtest/gtest-spi.h"
#include "src/gtest-internal-inl.h"

namespace testing {
namespace internal {

#if GTEST_CAN_STREAM_RESULTS_

class StreamingListenerTest : public Test
{
public:
    class FakeSocketWriter : public StreamingListener::AbstractSocketWriter
    {
    public:
        // Sends a string to the socket.
        virtual void Send(const std::string &message) { output_ += message; }

        std::string output_;
    };

    StreamingListenerTest()
        : fake_sock_writer_(new FakeSocketWriter)
        , streamer_(fake_sock_writer_)
        , test_info_obj_("FooTest", "Bar", NULL, NULL,
                         CodeLocation(__FILE__, __LINE__), 0, NULL)
    {
    }

protected:
    std::string *output() { return &(fake_sock_writer_->output_); }

    FakeSocketWriter *const fake_sock_writer_;
    StreamingListener streamer_;
    UnitTest unit_test_;
    TestInfo test_info_obj_; // The name test_info_ was taken by testing::Test.
};

TEST_F(StreamingListenerTest, OnTestProgramEnd)
{
    *output() = "";
    streamer_.OnTestProgramEnd(unit_test_);
    EXPECT_EQ("event=TestProgramEnd&passed=1\n", *output());
}

TEST_F(StreamingListenerTest, OnTestIterationEnd)
{
    *output() = "";
    streamer_.OnTestIterationEnd(unit_test_, 42);
    EXPECT_EQ("event=TestIterationEnd&passed=1&elapsed_time=0ms\n", *output());
}

TEST_F(StreamingListenerTest, OnTestCaseStart)
{
    *output() = "";
    streamer_.OnTestCaseStart(TestCase("FooTest", "Bar", NULL, NULL));
    EXPECT_EQ("event=TestCaseStart&name=FooTest\n", *output());
}

TEST_F(StreamingListenerTest, OnTestCaseEnd)
{
    *output() = "";
    streamer_.OnTestCaseEnd(TestCase("FooTest", "Bar", NULL, NULL));
    EXPECT_EQ("event=TestCaseEnd&passed=1&elapsed_time=0ms\n", *output());
}

TEST_F(StreamingListenerTest, OnTestStart)
{
    *output() = "";
    streamer_.OnTestStart(test_info_obj_);
    EXPECT_EQ("event=TestStart&name=Bar\n", *output());
}

TEST_F(StreamingListenerTest, OnTestEnd)
{
    *output() = "";
    streamer_.OnTestEnd(test_info_obj_);
    EXPECT_EQ("event=TestEnd&passed=1&elapsed_time=0ms\n", *output());
}

TEST_F(StreamingListenerTest, OnTestPartResult)
{
    *output() = "";
    streamer_.OnTestPartResult(TestPartResult(
        TestPartResult::kFatalFailure, "foo.cc", 42, "failed=\n&%"));

    // Meta characters in the failure message should be properly escaped.
    EXPECT_EQ(
        "event=TestPartResult&file=foo.cc&line=42&message=failed%3D%0A%26%25\n",
        *output());
}

#endif // GTEST_CAN_STREAM_RESULTS_

// Provides access to otherwise private parts of the TestEventListeners class
// that are needed to test it.
class TestEventListenersAccessor
{
public:
    static TestEventListener *GetRepeater(TestEventListeners *listeners)
    {
        return listeners->repeater();
    }

    static void SetDefaultResultPrinter(TestEventListeners *listeners,
                                        TestEventListener *listener)
    {
        listeners->SetDefaultResultPrinter(listener);
    }
    static void SetDefaultXmlGenerator(TestEventListeners *listeners,
                                       TestEventListener *listener)
    {
        listeners->SetDefaultXmlGenerator(listener);
    }

    static bool EventForwardingEnabled(const TestEventListeners &listeners)
    {
        return listeners.EventForwardingEnabled();
    }

    static void SuppressEventForwarding(TestEventListeners *listeners)
    {
        listeners->SuppressEventForwarding();
    }
};

class UnitTestRecordPropertyTestHelper : public Test
{
protected:
    UnitTestRecordPropertyTestHelper() {}

    // Forwards to UnitTest::RecordProperty() to bypass access controls.
    void UnitTestRecordProperty(const char *key, const std::string &value)
    {
        unit_test_.RecordProperty(key, value);
    }

    UnitTest unit_test_;
};

} // namespace internal
} // namespace testing

using testing::AssertionFailure;
using testing::AssertionResult;
using testing::AssertionSuccess;
using testing::DoubleLE;
using testing::EmptyTestEventListener;
using testing::Environment;
using testing::FloatLE;
using testing::GTEST_FLAG(also_run_disabled_tests);
using testing::GTEST_FLAG(break_on_failure);
using testing::GTEST_FLAG(catch_exceptions);
using testing::GTEST_FLAG(color);
using testing::GTEST_FLAG(death_test_use_fork);
using testing::GTEST_FLAG(filter);
using testing::GTEST_FLAG(list_tests);
using testing::GTEST_FLAG(output);
using testing::GTEST_FLAG(print_time);
using testing::GTEST_FLAG(random_seed);
using testing::GTEST_FLAG(repeat);
using testing::GTEST_FLAG(show_internal_stack_frames);
using testing::GTEST_FLAG(shuffle);
using testing::GTEST_FLAG(stack_trace_depth);
using testing::GTEST_FLAG(stream_result_to);
using testing::GTEST_FLAG(throw_on_failure);
using testing::IsNotSubstring;
using testing::IsSubstring;
using testing::Message;
using testing::ScopedFakeTestPartResultReporter;
using testing::StaticAssertTypeEq;
using testing::Test;
using testing::TestCase;
using testing::TestEventListeners;
using testing::TestInfo;
using testing::TestPartResult;
using testing::TestPartResultArray;
using testing::TestProperty;
using testing::TestResult;
using testing::TimeInMillis;
using testing::UnitTest;
using testing::internal::AddReference;
using testing::internal::AlwaysFalse;
using testing::internal::AlwaysTrue;
using testing::internal::AppendUserMessage;
using testing::internal::ArrayAwareFind;
using testing::internal::ArrayEq;
using testing::internal::CodePointToUtf8;
using testing::internal::CompileAssertTypesEqual;
using testing::internal::CopyArray;
using testing::internal::CountIf;
using testing::internal::EqFailure;
using testing::internal::FloatingPoint;
using testing::internal::ForEach;
using testing::internal::FormatEpochTimeInMillisAsIso8601;
using testing::internal::FormatTimeInMillisAsSeconds;
using testing::internal::GTestFlagSaver;
using testing::internal::GetCurrentOsStackTraceExceptTop;
using testing::internal::GetElementOr;
using testing::internal::GetNextRandomSeed;
using testing::internal::GetRandomSeedFromFlag;
using testing::internal::GetTestTypeId;
using testing::internal::GetTimeInMillis;
using testing::internal::GetTypeId;
using testing::internal::GetUnitTestImpl;
using testing::internal::ImplicitlyConvertible;
using testing::internal::Int32;
using testing::internal::Int32FromEnvOrDie;
using testing::internal::IsAProtocolMessage;
using testing::internal::IsContainer;
using testing::internal::IsContainerTest;
using testing::internal::IsNotContainer;
using testing::internal::NativeArray;
using testing::internal::OsStackTraceGetter;
using testing::internal::OsStackTraceGetterInterface;
using testing::internal::ParseInt32Flag;
using testing::internal::RelationToSourceCopy;
using testing::internal::RelationToSourceReference;
using testing::internal::RemoveConst;
using testing::internal::RemoveReference;
using testing::internal::ShouldRunTestOnShard;
using testing::internal::ShouldShard;
using testing::internal::ShouldUseColor;
using testing::internal::Shuffle;
using testing::internal::ShuffleRange;
using testing::internal::SkipPrefix;
using testing::internal::StreamableToString;
using testing::internal::String;
using testing::internal::TestEventListenersAccessor;
using testing::internal::TestResultAccessor;
using testing::internal::UInt32;
using testing::internal::UnitTestImpl;
using testing::internal::WideStringToUtf8;
using testing::internal::edit_distance::CalculateOptimalEdits;
using testing::internal::edit_distance::CreateUnifiedDiff;
using testing::internal::edit_distance::EditType;
using testing::internal::kMaxRandomSeed;
using testing::internal::kTestTypeIdInGoogleTest;
using testing::kMaxStackTraceDepth;

#if GTEST_HAS_STREAM_REDIRECTION
using testing::internal::CaptureStdout;
using testing::internal::GetCapturedStdout;
#endif

#if GTEST_IS_THREADSAFE
using testing::internal::ThreadWithParam;
#endif

class TestingVector : public std::vector<int>
{
};

::std::ostream &operator<<(::std::ostream &os,
                           const TestingVector &vector)
{
    os << "{ ";
    for (size_t i = 0; i < vector.size(); i++) {
        os << vector[i] << " ";
    }
    os << "}";
    return os;
}

// This line tests that we can define tests in an unnamed namespace.
namespace {

TEST(GetRandomSeedFromFlagTest, HandlesZero)
{
    const int seed = GetRandomSeedFromFlag(0);
    EXPECT_LE(1, seed);
    EXPECT_LE(seed, static_cast<int>(kMaxRandomSeed));
}

TEST(GetRandomSeedFromFlagTest, PreservesValidSeed)
{
    EXPECT_EQ(1, GetRandomSeedFromFlag(1));
    EXPECT_EQ(2, GetRandomSeedFromFlag(2));
    EXPECT_EQ(kMaxRandomSeed - 1, GetRandomSeedFromFlag(kMaxRandomSeed - 1));
    EXPECT_EQ(static_cast<int>(kMaxRandomSeed),
              GetRandomSeedFromFlag(kMaxRandomSeed));
}

TEST(GetRandomSeedFromFlagTest, NormalizesInvalidSeed)
{
    const int seed1 = GetRandomSeedFromFlag(-1);
    EXPECT_LE(1, seed1);
    EXPECT_LE(seed1, static_cast<int>(kMaxRandomSeed));

    const int seed2 = GetRandomSeedFromFlag(kMaxRandomSeed + 1);
    EXPECT_LE(1, seed2);
    EXPECT_LE(seed2, static_cast<int>(kMaxRandomSeed));
}

TEST(GetNextRandomSeedTest, WorksForValidInput)
{
    EXPECT_EQ(2, GetNextRandomSeed(1));
    EXPECT_EQ(3, GetNextRandomSeed(2));
    EXPECT_EQ(static_cast<int>(kMaxRandomSeed),
              GetNextRandomSeed(kMaxRandomSeed - 1));
    EXPECT_EQ(1, GetNextRandomSeed(kMaxRandomSeed));

    // We deliberately don't test GetNextRandomSeed() with invalid
    // inputs, as that requires death tests, which are expensive.  This
    // is fine as GetNextRandomSeed() is internal and has a
    // straightforward definition.
}

static void ClearCurrentTestPartResults()
{
    TestResultAccessor::ClearTestPartResults(
        GetUnitTestImpl()->current_test_result());
}

// Tests GetTypeId.

TEST(GetTypeIdTest, ReturnsSameValueForSameType)
{
    EXPECT_EQ(GetTypeId<int>(), GetTypeId<int>());
    EXPECT_EQ(GetTypeId<Test>(), GetTypeId<Test>());
}

class SubClassOfTest : public Test
{
};
class AnotherSubClassOfTest : public Test
{
};

TEST(GetTypeIdTest, ReturnsDifferentValuesForDifferentTypes)
{
    EXPECT_NE(GetTypeId<int>(), GetTypeId<const int>());
    EXPECT_NE(GetTypeId<int>(), GetTypeId<char>());
    EXPECT_NE(GetTypeId<int>(), GetTestTypeId());
    EXPECT_NE(GetTypeId<SubClassOfTest>(), GetTestTypeId());
    EXPECT_NE(GetTypeId<AnotherSubClassOfTest>(), GetTestTypeId());
    EXPECT_NE(GetTypeId<AnotherSubClassOfTest>(), GetTypeId<SubClassOfTest>());
}

// Verifies that GetTestTypeId() returns the same value, no matter it
// is called from inside Google Test or outside of it.
TEST(GetTestTypeIdTest, ReturnsTheSameValueInsideOrOutsideOfGoogleTest)
{
    EXPECT_EQ(kTestTypeIdInGoogleTest, GetTestTypeId());
}

// Tests CanonicalizeForStdLibVersioning.

using ::testing::internal::CanonicalizeForStdLibVersioning;

TEST(CanonicalizeForStdLibVersioning, LeavesUnversionedNamesUnchanged)
{
    EXPECT_EQ("std::bind", CanonicalizeForStdLibVersioning("std::bind"));
    EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::_"));
    EXPECT_EQ("std::__foo", CanonicalizeForStdLibVersioning("std::__foo"));
    EXPECT_EQ("gtl::__1::x", CanonicalizeForStdLibVersioning("gtl::__1::x"));
    EXPECT_EQ("__1::x", CanonicalizeForStdLibVersioning("__1::x"));
    EXPECT_EQ("::__1::x", CanonicalizeForStdLibVersioning("::__1::x"));
}

TEST(CanonicalizeForStdLibVersioning, ElidesDoubleUnderNames)
{
    EXPECT_EQ("std::bind", CanonicalizeForStdLibVersioning("std::__1::bind"));
    EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::__1::_"));

    EXPECT_EQ("std::bind", CanonicalizeForStdLibVersioning("std::__g::bind"));
    EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::__g::_"));

    EXPECT_EQ("std::bind",
              CanonicalizeForStdLibVersioning("std::__google::bind"));
    EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::__google::_"));
}

// Tests FormatTimeInMillisAsSeconds().

TEST(FormatTimeInMillisAsSecondsTest, FormatsZero)
{
    EXPECT_EQ("0", FormatTimeInMillisAsSeconds(0));
}

TEST(FormatTimeInMillisAsSecondsTest, FormatsPositiveNumber)
{
    EXPECT_EQ("0.003", FormatTimeInMillisAsSeconds(3));
    EXPECT_EQ("0.01", FormatTimeInMillisAsSeconds(10));
    EXPECT_EQ("0.2", FormatTimeInMillisAsSeconds(200));
    EXPECT_EQ("1.2", FormatTimeInMillisAsSeconds(1200));
    EXPECT_EQ("3", FormatTimeInMillisAsSeconds(3000));
}

TEST(FormatTimeInMillisAsSecondsTest, FormatsNegativeNumber)
{
    EXPECT_EQ("-0.003", FormatTimeInMillisAsSeconds(-3));
    EXPECT_EQ("-0.01", FormatTimeInMillisAsSeconds(-10));
    EXPECT_EQ("-0.2", FormatTimeInMillisAsSeconds(-200));
    EXPECT_EQ("-1.2", FormatTimeInMillisAsSeconds(-1200));
    EXPECT_EQ("-3", FormatTimeInMillisAsSeconds(-3000));
}

// Tests FormatEpochTimeInMillisAsIso8601().  The correctness of conversion
// for particular dates below was verified in Python using
// datetime.datetime.fromutctimestamp(<timetamp>/1000).

// FormatEpochTimeInMillisAsIso8601 depends on the current timezone, so we
// have to set up a particular timezone to obtain predictable results.
class FormatEpochTimeInMillisAsIso8601Test : public Test
{
public:
    // On Cygwin, GCC doesn't allow unqualified integer literals to exceed
    // 32 bits, even when 64-bit integer types are available.  We have to
    // force the constants to have a 64-bit type here.
    static const TimeInMillis kMillisPerSec = 1000;

private:
    virtual void SetUp()
    {
        saved_tz_ = NULL;

        GTEST_DISABLE_MSC_DEPRECATED_PUSH_(/* getenv, strdup: deprecated */)
        if (getenv("TZ"))
            saved_tz_ = strdup(getenv("TZ"));
        GTEST_DISABLE_MSC_DEPRECATED_POP_()

        // Set up the time zone for FormatEpochTimeInMillisAsIso8601 to use.  We
        // cannot use the local time zone because the function's output depends
        // on the time zone.
        SetTimeZone("UTC+00");
    }

    virtual void TearDown()
    {
        SetTimeZone(saved_tz_);
        free(const_cast<char *>(saved_tz_));
        saved_tz_ = NULL;
    }

    static void SetTimeZone(const char *time_zone)
    {
        // tzset() distinguishes between the TZ variable being present and empty
        // and not being present, so we have to consider the case of time_zone
        // being NULL.
#if _MSC_VER || GTEST_OS_WINDOWS_MINGW
        // ...Unless it's MSVC, whose standard library's _putenv doesn't
        // distinguish between an empty and a missing variable.
        const std::string env_var =
            std::string("TZ=") + (time_zone ? time_zone : "");
        _putenv(env_var.c_str());
        GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996 /* deprecated function */)
        tzset();
        GTEST_DISABLE_MSC_WARNINGS_POP_()
#else
        if (time_zone) {
            setenv(("TZ"), time_zone, 1);
        } else {
            unsetenv("TZ");
        }
        tzset();
#endif
    }

    const char *saved_tz_;
};

const TimeInMillis FormatEpochTimeInMillisAsIso8601Test::kMillisPerSec;

TEST_F(FormatEpochTimeInMillisAsIso8601Test, PrintsTwoDigitSegments)
{
    EXPECT_EQ("2011-10-31T18:52:42",
              FormatEpochTimeInMillisAsIso8601(1320087162 * kMillisPerSec));
}

TEST_F(FormatEpochTimeInMillisAsIso8601Test, MillisecondsDoNotAffectResult)
{
    EXPECT_EQ(
        "2011-10-31T18:52:42",
        FormatEpochTimeInMillisAsIso8601(1320087162 * kMillisPerSec + 234));
}

TEST_F(FormatEpochTimeInMillisAsIso8601Test, PrintsLeadingZeroes)
{
    EXPECT_EQ("2011-09-03T05:07:02",
              FormatEpochTimeInMillisAsIso8601(1315026422 * kMillisPerSec));
}

TEST_F(FormatEpochTimeInMillisAsIso8601Test, Prints24HourTime)
{
    EXPECT_EQ("2011-09-28T17:08:22",
              FormatEpochTimeInMillisAsIso8601(1317229702 * kMillisPerSec));
}

TEST_F(FormatEpochTimeInMillisAsIso8601Test, PrintsEpochStart)
{
    EXPECT_EQ("1970-01-01T00:00:00", FormatEpochTimeInMillisAsIso8601(0));
}

#if GTEST_CAN_COMPARE_NULL

#ifdef __BORLANDC__
// Silences warnings: "Condition is always true", "Unreachable code"
#pragma option push -w-ccc -w-rch
#endif

// Tests that GTEST_IS_NULL_LITERAL_(x) is true when x is a null
// pointer literal.
TEST(NullLiteralTest, IsTrueForNullLiterals)
{
    EXPECT_TRUE(GTEST_IS_NULL_LITERAL_(NULL));
    EXPECT_TRUE(GTEST_IS_NULL_LITERAL_(0));
    EXPECT_TRUE(GTEST_IS_NULL_LITERAL_(0U));
    EXPECT_TRUE(GTEST_IS_NULL_LITERAL_(0L));
}

// Tests that GTEST_IS_NULL_LITERAL_(x) is false when x is not a null
// pointer literal.
TEST(NullLiteralTest, IsFalseForNonNullLiterals)
{
    EXPECT_FALSE(GTEST_IS_NULL_LITERAL_(1));
    EXPECT_FALSE(GTEST_IS_NULL_LITERAL_(0.0));
    EXPECT_FALSE(GTEST_IS_NULL_LITERAL_('a'));
    EXPECT_FALSE(GTEST_IS_NULL_LITERAL_(static_cast<void *>(NULL)));
}

#ifdef __BORLANDC__
// Restores warnings after previous "#pragma option push" suppressed them.
#pragma option pop
#endif

#endif // GTEST_CAN_COMPARE_NULL
//
// Tests CodePointToUtf8().

// Tests that the NUL character L'\0' is encoded correctly.
TEST(CodePointToUtf8Test, CanEncodeNul)
{
    EXPECT_EQ("", CodePointToUtf8(L'\0'));
}

// Tests that ASCII characters are encoded correctly.
TEST(CodePointToUtf8Test, CanEncodeAscii)
{
    EXPECT_EQ("a", CodePointToUtf8(L'a'));
    EXPECT_EQ("Z", CodePointToUtf8(L'Z'));
    EXPECT_EQ("&", CodePointToUtf8(L'&'));
    EXPECT_EQ("\x7F", CodePointToUtf8(L'\x7F'));
}

// Tests that Unicode code-points that have 8 to 11 bits are encoded
// as 110xxxxx 10xxxxxx.
TEST(CodePointToUtf8Test, CanEncode8To11Bits)
{
    // 000 1101 0011 => 110-00011 10-010011
    EXPECT_EQ("\xC3\x93", CodePointToUtf8(L'\xD3'));

    // 101 0111 0110 => 110-10101 10-110110
    // Some compilers (e.g., GCC on MinGW) cannot handle non-ASCII codepoints
    // in wide strings and wide chars. In order to accommodate them, we have to
    // introduce such character constants as integers.
    EXPECT_EQ("\xD5\xB6",
              CodePointToUtf8(static_cast<wchar_t>(0x576)));
}

// Tests that Unicode code-points that have 12 to 16 bits are encoded
// as 1110xxxx 10xxxxxx 10xxxxxx.
TEST(CodePointToUtf8Test, CanEncode12To16Bits)
{
    // 0000 1000 1101 0011 => 1110-0000 10-100011 10-010011
    EXPECT_EQ("\xE0\xA3\x93",
              CodePointToUtf8(static_cast<wchar_t>(0x8D3)));

    // 1100 0111 0100 1101 => 1110-1100 10-011101 10-001101
    EXPECT_EQ("\xEC\x9D\x8D",
              CodePointToUtf8(static_cast<wchar_t>(0xC74D)));
}

#if !GTEST_WIDE_STRING_USES_UTF16_
// Tests in this group require a wchar_t to hold > 16 bits, and thus
// are skipped on Windows, Cygwin, and Symbian, where a wchar_t is
// 16-bit wide. This code may not compile on those systems.

// Tests that Unicode code-points that have 17 to 21 bits are encoded
// as 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx.
TEST(CodePointToUtf8Test, CanEncode17To21Bits)
{
    // 0 0001 0000 1000 1101 0011 => 11110-000 10-010000 10-100011 10-010011
    EXPECT_EQ("\xF0\x90\xA3\x93", CodePointToUtf8(L'\x108D3'));

    // 0 0001 0000 0100 0000 0000 => 11110-000 10-010000 10-010000 10-000000
    EXPECT_EQ("\xF0\x90\x90\x80", CodePointToUtf8(L'\x10400'));

    // 1 0000 1000 0110 0011 0100 => 11110-100 10-001000 10-011000 10-110100
    EXPECT_EQ("\xF4\x88\x98\xB4", CodePointToUtf8(L'\x108634'));
}

// Tests that encoding an invalid code-point generates the expected result.
TEST(CodePointToUtf8Test, CanEncodeInvalidCodePoint)
{
    EXPECT_EQ("(Invalid Unicode 0x1234ABCD)", CodePointToUtf8(L'\x1234ABCD'));
}

#endif // !GTEST_WIDE_STRING_USES_UTF16_

// Tests WideStringToUtf8().

// Tests that the NUL character L'\0' is encoded correctly.
TEST(WideStringToUtf8Test, CanEncodeNul)
{
    EXPECT_STREQ("", WideStringToUtf8(L"", 0).c_str());
    EXPECT_STREQ("", WideStringToUtf8(L"", -1).c_str());
}

// Tests that ASCII strings are encoded correctly.
TEST(WideStringToUtf8Test, CanEncodeAscii)
{
    EXPECT_STREQ("a", WideStringToUtf8(L"a", 1).c_str());
    EXPECT_STREQ("ab", WideStringToUtf8(L"ab", 2).c_str());
    EXPECT_STREQ("a", WideStringToUtf8(L"a", -1).c_str());
    EXPECT_STREQ("ab", WideStringToUtf8(L"ab", -1).c_str());
}

// Tests that Unicode code-points that have 8 to 11 bits are encoded
// as 110xxxxx 10xxxxxx.
TEST(WideStringToUtf8Test, CanEncode8To11Bits)
{
    // 000 1101 0011 => 110-00011 10-010011
    EXPECT_STREQ("\xC3\x93", WideStringToUtf8(L"\xD3", 1).c_str());
    EXPECT_STREQ("\xC3\x93", WideStringToUtf8(L"\xD3", -1).c_str());

    // 101 0111 0110 => 110-10101 10-110110
    const wchar_t s[] = {0x576, '\0'};
    EXPECT_STREQ("\xD5\xB6", WideStringToUtf8(s, 1).c_str());
    EXPECT_STREQ("\xD5\xB6", WideStringToUtf8(s, -1).c_str());
}

// Tests that Unicode code-points that have 12 to 16 bits are encoded
// as 1110xxxx 10xxxxxx 10xxxxxx.
TEST(WideStringToUtf8Test, CanEncode12To16Bits)
{
    // 0000 1000 1101 0011 => 1110-0000 10-100011 10-010011
    const wchar_t s1[] = {0x8D3, '\0'};
    EXPECT_STREQ("\xE0\xA3\x93", WideStringToUtf8(s1, 1).c_str());
    EXPECT_STREQ("\xE0\xA3\x93", WideStringToUtf8(s1, -1).c_str());

    // 1100 0111 0100 1101 => 1110-1100 10-011101 10-001101
    const wchar_t s2[] = {0xC74D, '\0'};
    EXPECT_STREQ("\xEC\x9D\x8D", WideStringToUtf8(s2, 1).c_str());
    EXPECT_STREQ("\xEC\x9D\x8D", WideStringToUtf8(s2, -1).c_str());
}

// Tests that the conversion stops when the function encounters \0 character.
TEST(WideStringToUtf8Test, StopsOnNulCharacter)
{
    EXPECT_STREQ("ABC", WideStringToUtf8(L"ABC\0XYZ", 100).c_str());
}

// Tests that the conversion stops when the function reaches the limit
// specified by the 'length' parameter.
TEST(WideStringToUtf8Test, StopsWhenLengthLimitReached)
{
    EXPECT_STREQ("ABC", WideStringToUtf8(L"ABCDEF", 3).c_str());
}

#if !GTEST_WIDE_STRING_USES_UTF16_
// Tests that Unicode code-points that have 17 to 21 bits are encoded
// as 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx. This code may not compile
// on the systems using UTF-16 encoding.
TEST(WideStringToUtf8Test, CanEncode17To21Bits)
{
    // 0 0001 0000 1000 1101 0011 => 11110-000 10-010000 10-100011 10-010011
    EXPECT_STREQ("\xF0\x90\xA3\x93", WideStringToUtf8(L"\x108D3", 1).c_str());
    EXPECT_STREQ("\xF0\x90\xA3\x93", WideStringToUtf8(L"\x108D3", -1).c_str());

    // 1 0000 1000 0110 0011 0100 => 11110-100 10-001000 10-011000 10-110100
    EXPECT_STREQ("\xF4\x88\x98\xB4", WideStringToUtf8(L"\x108634", 1).c_str());
    EXPECT_STREQ("\xF4\x88\x98\xB4", WideStringToUtf8(L"\x108634", -1).c_str());
}

// Tests that encoding an invalid code-point generates the expected result.
TEST(WideStringToUtf8Test, CanEncodeInvalidCodePoint)
{
    EXPECT_STREQ("(Invalid Unicode 0xABCDFF)",
                 WideStringToUtf8(L"\xABCDFF", -1).c_str());
}
#else // !GTEST_WIDE_STRING_USES_UTF16_
// Tests that surrogate pairs are encoded correctly on the systems using
// UTF-16 encoding in the wide strings.
TEST(WideStringToUtf8Test, CanEncodeValidUtf16SUrrogatePairs)
{
    const wchar_t s[] = {0xD801, 0xDC00, '\0'};
    EXPECT_STREQ("\xF0\x90\x90\x80", WideStringToUtf8(s, -1).c_str());
}

// Tests that encoding an invalid UTF-16 surrogate pair
// generates the expected result.
TEST(WideStringToUtf8Test, CanEncodeInvalidUtf16SurrogatePair)
{
    // Leading surrogate is at the end of the string.
    const wchar_t s1[] = {0xD800, '\0'};
    EXPECT_STREQ("\xED\xA0\x80", WideStringToUtf8(s1, -1).c_str());
    // Leading surrogate is not followed by the trailing surrogate.
    const wchar_t s2[] = {0xD800, 'M', '\0'};
    EXPECT_STREQ("\xED\xA0\x80M", WideStringToUtf8(s2, -1).c_str());
    // Trailing surrogate appearas without a leading surrogate.
    const wchar_t s3[] = {0xDC00, 'P', 'Q', 'R', '\0'};
    EXPECT_STREQ("\xED\xB0\x80PQR", WideStringToUtf8(s3, -1).c_str());
}
#endif // !GTEST_WIDE_STRING_USES_UTF16_

// Tests that codepoint concatenation works correctly.
#if !GTEST_WIDE_STRING_USES_UTF16_
TEST(WideStringToUtf8Test, ConcatenatesCodepointsCorrectly)
{
    const wchar_t s[] = {0x108634, 0xC74D, '\n', 0x576, 0x8D3, 0x108634, '\0'};
    EXPECT_STREQ(
        "\xF4\x88\x98\xB4"
        "\xEC\x9D\x8D"
        "\n"
        "\xD5\xB6"
        "\xE0\xA3\x93"
        "\xF4\x88\x98\xB4",
        WideStringToUtf8(s, -1).c_str());
}
#else
TEST(WideStringToUtf8Test, ConcatenatesCodepointsCorrectly)
{
    const wchar_t s[] = {0xC74D, '\n', 0x576, 0x8D3, '\0'};
    EXPECT_STREQ(
        "\xEC\x9D\x8D"
        "\n"
        "\xD5\xB6"
        "\xE0\xA3\x93",
        WideStringToUtf8(s, -1).c_str());
}
#endif // !GTEST_WIDE_STRING_USES_UTF16_

// Tests the Random class.

TEST(RandomDeathTest, GeneratesCrashesOnInvalidRange)
{
    testing::internal::Random random(42);
    EXPECT_DEATH_IF_SUPPORTED(
        random.Generate(0),
        "Cannot generate a number in the range \\[0, 0\\)");
    EXPECT_DEATH_IF_SUPPORTED(
        random.Generate(testing::internal::Random::kMaxRange + 1),
        "Generation of a number in \\[0, 2147483649\\) was requested, "
        "but this can only generate numbers in \\[0, 2147483648\\)");
}

TEST(RandomTest, GeneratesNumbersWithinRange)
{
    const UInt32 kRange = 10000;
    testing::internal::Random random(12345);
    for (int i = 0; i < 10; i++) {
        EXPECT_LT(random.Generate(kRange), kRange) << " for iteration " << i;
    }

    testing::internal::Random random2(testing::internal::Random::kMaxRange);
    for (int i = 0; i < 10; i++) {
        EXPECT_LT(random2.Generate(kRange), kRange) << " for iteration " << i;
    }
}

TEST(RandomTest, RepeatsWhenReseeded)
{
    const int kSeed = 123;
    const int kArraySize = 10;
    const UInt32 kRange = 10000;
    UInt32 values[kArraySize];

    testing::internal::Random random(kSeed);
    for (int i = 0; i < kArraySize; i++) {
        values[i] = random.Generate(kRange);
    }

    random.Reseed(kSeed);
    for (int i = 0; i < kArraySize; i++) {
        EXPECT_EQ(values[i], random.Generate(kRange)) << " for iteration " << i;
    }
}

// Tests STL container utilities.

// Tests CountIf().

static bool IsPositive(int n)
{
    return n > 0;
}

TEST(ContainerUtilityTest, CountIf)
{
    std::vector<int> v;
    EXPECT_EQ(0, CountIf(v, IsPositive)); // Works for an empty container.

    v.push_back(-1);
    v.push_back(0);
    EXPECT_EQ(0, CountIf(v, IsPositive)); // Works when no value satisfies.

    v.push_back(2);
    v.push_back(-10);
    v.push_back(10);
    EXPECT_EQ(2, CountIf(v, IsPositive));
}

// Tests ForEach().

static int g_sum = 0;
static void Accumulate(int n)
{
    g_sum += n;
}

TEST(ContainerUtilityTest, ForEach)
{
    std::vector<int> v;
    g_sum = 0;
    ForEach(v, Accumulate);
    EXPECT_EQ(0, g_sum); // Works for an empty container;

    g_sum = 0;
    v.push_back(1);
    ForEach(v, Accumulate);
    EXPECT_EQ(1, g_sum); // Works for a container with one element.

    g_sum = 0;
    v.push_back(20);
    v.push_back(300);
    ForEach(v, Accumulate);
    EXPECT_EQ(321, g_sum);
}

// Tests GetElementOr().
TEST(ContainerUtilityTest, GetElementOr)
{
    std::vector<char> a;
    EXPECT_EQ('x', GetElementOr(a, 0, 'x'));

    a.push_back('a');
    a.push_back('b');
    EXPECT_EQ('a', GetElementOr(a, 0, 'x'));
    EXPECT_EQ('b', GetElementOr(a, 1, 'x'));
    EXPECT_EQ('x', GetElementOr(a, -2, 'x'));
    EXPECT_EQ('x', GetElementOr(a, 2, 'x'));
}

TEST(ContainerUtilityDeathTest, ShuffleRange)
{
    std::vector<int> a;
    a.push_back(0);
    a.push_back(1);
    a.push_back(2);
    testing::internal::Random random(1);

    EXPECT_DEATH_IF_SUPPORTED(
        ShuffleRange(&random, -1, 1, &a),
        "Invalid shuffle range start -1: must be in range \\[0, 3\\]");
    EXPECT_DEATH_IF_SUPPORTED(
        ShuffleRange(&random, 4, 4, &a),
        "Invalid shuffle range start 4: must be in range \\[0, 3\\]");
    EXPECT_DEATH_IF_SUPPORTED(
        ShuffleRange(&random, 3, 2, &a),
        "Invalid shuffle range finish 2: must be in range \\[3, 3\\]");
    EXPECT_DEATH_IF_SUPPORTED(
        ShuffleRange(&random, 3, 4, &a),
        "Invalid shuffle range finish 4: must be in range \\[3, 3\\]");
}

class VectorShuffleTest : public Test
{
protected:
    static const int kVectorSize = 20;

    VectorShuffleTest()
        : random_(1)
    {
        for (int i = 0; i < kVectorSize; i++) {
            vector_.push_back(i);
        }
    }

    static bool VectorIsCorrupt(const TestingVector &vector)
    {
        if (kVectorSize != static_cast<int>(vector.size())) {
            return true;
        }

        bool found_in_vector[kVectorSize] = {false};
        for (size_t i = 0; i < vector.size(); i++) {
            const int e = vector[i];
            if (e < 0 || e >= kVectorSize || found_in_vector[e]) {
                return true;
            }
            found_in_vector[e] = true;
        }

        // Vector size is correct, elements' range is correct, no
        // duplicate elements.  Therefore no corruption has occurred.
        return false;
    }

    static bool VectorIsNotCorrupt(const TestingVector &vector)
    {
        return !VectorIsCorrupt(vector);
    }

    static bool RangeIsShuffled(const TestingVector &vector, int begin, int end)
    {
        for (int i = begin; i < end; i++) {
            if (i != vector[i]) {
                return true;
            }
        }
        return false;
    }

    static bool RangeIsUnshuffled(
        const TestingVector &vector, int begin, int end)
    {
        return !RangeIsShuffled(vector, begin, end);
    }

    static bool VectorIsShuffled(const TestingVector &vector)
    {
        return RangeIsShuffled(vector, 0, static_cast<int>(vector.size()));
    }

    static bool VectorIsUnshuffled(const TestingVector &vector)
    {
        return !VectorIsShuffled(vector);
    }

    testing::internal::Random random_;
    TestingVector vector_;
}; // class VectorShuffleTest

const int VectorShuffleTest::kVectorSize;

TEST_F(VectorShuffleTest, HandlesEmptyRange)
{
    // Tests an empty range at the beginning...
    ShuffleRange(&random_, 0, 0, &vector_);
    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    ASSERT_PRED1(VectorIsUnshuffled, vector_);

    // ...in the middle...
    ShuffleRange(&random_, kVectorSize / 2, kVectorSize / 2, &vector_);
    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    ASSERT_PRED1(VectorIsUnshuffled, vector_);

    // ...at the end...
    ShuffleRange(&random_, kVectorSize - 1, kVectorSize - 1, &vector_);
    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    ASSERT_PRED1(VectorIsUnshuffled, vector_);

    // ...and past the end.
    ShuffleRange(&random_, kVectorSize, kVectorSize, &vector_);
    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    ASSERT_PRED1(VectorIsUnshuffled, vector_);
}

TEST_F(VectorShuffleTest, HandlesRangeOfSizeOne)
{
    // Tests a size one range at the beginning...
    ShuffleRange(&random_, 0, 1, &vector_);
    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    ASSERT_PRED1(VectorIsUnshuffled, vector_);

    // ...in the middle...
    ShuffleRange(&random_, kVectorSize / 2, kVectorSize / 2 + 1, &vector_);
    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    ASSERT_PRED1(VectorIsUnshuffled, vector_);

    // ...and at the end.
    ShuffleRange(&random_, kVectorSize - 1, kVectorSize, &vector_);
    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    ASSERT_PRED1(VectorIsUnshuffled, vector_);
}

// Because we use our own random number generator and a fixed seed,
// we can guarantee that the following "random" tests will succeed.

TEST_F(VectorShuffleTest, ShufflesEntireVector)
{
    Shuffle(&random_, &vector_);
    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    EXPECT_FALSE(VectorIsUnshuffled(vector_)) << vector_;

    // Tests the first and last elements in particular to ensure that
    // there are no off-by-one problems in our shuffle algorithm.
    EXPECT_NE(0, vector_[0]);
    EXPECT_NE(kVectorSize - 1, vector_[kVectorSize - 1]);
}

TEST_F(VectorShuffleTest, ShufflesStartOfVector)
{
    const int kRangeSize = kVectorSize / 2;

    ShuffleRange(&random_, 0, kRangeSize, &vector_);

    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    EXPECT_PRED3(RangeIsShuffled, vector_, 0, kRangeSize);
    EXPECT_PRED3(RangeIsUnshuffled, vector_, kRangeSize, kVectorSize);
}

TEST_F(VectorShuffleTest, ShufflesEndOfVector)
{
    const int kRangeSize = kVectorSize / 2;
    ShuffleRange(&random_, kRangeSize, kVectorSize, &vector_);

    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    EXPECT_PRED3(RangeIsUnshuffled, vector_, 0, kRangeSize);
    EXPECT_PRED3(RangeIsShuffled, vector_, kRangeSize, kVectorSize);
}

TEST_F(VectorShuffleTest, ShufflesMiddleOfVector)
{
    int kRangeSize = kVectorSize / 3;
    ShuffleRange(&random_, kRangeSize, 2 * kRangeSize, &vector_);

    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    EXPECT_PRED3(RangeIsUnshuffled, vector_, 0, kRangeSize);
    EXPECT_PRED3(RangeIsShuffled, vector_, kRangeSize, 2 * kRangeSize);
    EXPECT_PRED3(RangeIsUnshuffled, vector_, 2 * kRangeSize, kVectorSize);
}

TEST_F(VectorShuffleTest, ShufflesRepeatably)
{
    TestingVector vector2;
    for (int i = 0; i < kVectorSize; i++) {
        vector2.push_back(i);
    }

    random_.Reseed(1234);
    Shuffle(&random_, &vector_);
    random_.Reseed(1234);
    Shuffle(&random_, &vector2);

    ASSERT_PRED1(VectorIsNotCorrupt, vector_);
    ASSERT_PRED1(VectorIsNotCorrupt, vector2);

    for (int i = 0; i < kVectorSize; i++) {
        EXPECT_EQ(vector_[i], vector2[i]) << " where i is " << i;
    }
}

// Tests the size of the AssertHelper class.

TEST(AssertHelperTest, AssertHelperIsSmall)
{
    // To avoid breaking clients that use lots of assertions in one
    // function, we cannot grow the size of AssertHelper.
    EXPECT_LE(sizeof(testing::internal::AssertHelper), sizeof(void *));
}

// Tests String::EndsWithCaseInsensitive().
TEST(StringTest, EndsWithCaseInsensitive)
{
    EXPECT_TRUE(String::EndsWithCaseInsensitive("foobar", "BAR"));
    EXPECT_TRUE(String::EndsWithCaseInsensitive("foobaR", "bar"));
    EXPECT_TRUE(String::EndsWithCaseInsensitive("foobar", ""));
    EXPECT_TRUE(String::EndsWithCaseInsensitive("", ""));

    EXPECT_FALSE(String::EndsWithCaseInsensitive("Foobar", "foo"));
    EXPECT_FALSE(String::EndsWithCaseInsensitive("foobar", "Foo"));
    EXPECT_FALSE(String::EndsWithCaseInsensitive("", "foo"));
}

// C++Builder's preprocessor is buggy; it fails to expand macros that
// appear in macro parameters after wide char literals.  Provide an alias
// for NULL as a workaround.
static const wchar_t *const kNull = NULL;

// Tests String::CaseInsensitiveWideCStringEquals
TEST(StringTest, CaseInsensitiveWideCStringEquals)
{
    EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(NULL, NULL));
    EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(kNull, L""));
    EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(L"", kNull));
    EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(kNull, L"foobar"));
    EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(L"foobar", kNull));
    EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(L"foobar", L"foobar"));
    EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(L"foobar", L"FOOBAR"));
    EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(L"FOOBAR", L"foobar"));
}

#if GTEST_OS_WINDOWS

// Tests String::ShowWideCString().
TEST(StringTest, ShowWideCString)
{
    EXPECT_STREQ("(null)",
                 String::ShowWideCString(NULL).c_str());
    EXPECT_STREQ("", String::ShowWideCString(L"").c_str());
    EXPECT_STREQ("foo", String::ShowWideCString(L"foo").c_str());
}

#if GTEST_OS_WINDOWS_MOBILE
TEST(StringTest, AnsiAndUtf16Null)
{
    EXPECT_EQ(NULL, String::AnsiToUtf16(NULL));
    EXPECT_EQ(NULL, String::Utf16ToAnsi(NULL));
}

TEST(StringTest, AnsiAndUtf16ConvertBasic)
{
    const char *ansi = String::Utf16ToAnsi(L"str");
    EXPECT_STREQ("str", ansi);
    delete[] ansi;
    const WCHAR *utf16 = String::AnsiToUtf16("str");
    EXPECT_EQ(0, wcsncmp(L"str", utf16, 3));
    delete[] utf16;
}

TEST(StringTest, AnsiAndUtf16ConvertPathChars)
{
    const char *ansi = String::Utf16ToAnsi(L".:\\ \"*?");
    EXPECT_STREQ(".:\\ \"*?", ansi);
    delete[] ansi;
    const WCHAR *utf16 = String::AnsiToUtf16(".:\\ \"*?");
    EXPECT_EQ(0, wcsncmp(L".:\\ \"*?", utf16, 3));
    delete[] utf16;
}
#endif // GTEST_OS_WINDOWS_MOBILE

#endif // GTEST_OS_WINDOWS

// Tests TestProperty construction.
TEST(TestPropertyTest, StringValue)
{
    TestProperty property("key", "1");
    EXPECT_STREQ("key", property.key());
    EXPECT_STREQ("1", property.value());
}

// Tests TestProperty replacing a value.
TEST(TestPropertyTest, ReplaceStringValue)
{
    TestProperty property("key", "1");
    EXPECT_STREQ("1", property.value());
    property.SetValue("2");
    EXPECT_STREQ("2", property.value());
}

// AddFatalFailure() and AddNonfatalFailure() must be stand-alone
// functions (i.e. their definitions cannot be inlined at the call
// sites), or C++Builder won't compile the code.
static void AddFatalFailure()
{
    FAIL() << "Expected fatal failure.";
}

static void AddNonfatalFailure()
{
    ADD_FAILURE() << "Expected non-fatal failure.";
}

class ScopedFakeTestPartResultReporterTest : public Test
{
public: // Must be public and not protected due to a bug in g++ 3.4.2.
    enum FailureMode {
        FATAL_FAILURE,
        NONFATAL_FAILURE
    };
    static void AddFailure(FailureMode failure)
    {
        if (failure == FATAL_FAILURE) {
            AddFatalFailure();
        } else {
            AddNonfatalFailure();
        }
    }
};

// Tests that ScopedFakeTestPartResultReporter intercepts test
// failures.
TEST_F(ScopedFakeTestPartResultReporterTest, InterceptsTestFailures)
{
    TestPartResultArray results;
    {
        ScopedFakeTestPartResultReporter reporter(
            ScopedFakeTestPartResultReporter::INTERCEPT_ONLY_CURRENT_THREAD,
            &results);
        AddFailure(NONFATAL_FAILURE);
        AddFailure(FATAL_FAILURE);
    }

    EXPECT_EQ(2, results.size());
    EXPECT_TRUE(results.GetTestPartResult(0).nonfatally_failed());
    EXPECT_TRUE(results.GetTestPartResult(1).fatally_failed());
}

TEST_F(ScopedFakeTestPartResultReporterTest, DeprecatedConstructor)
{
    TestPartResultArray results;
    {
        // Tests, that the deprecated constructor still works.
        ScopedFakeTestPartResultReporter reporter(&results);
        AddFailure(NONFATAL_FAILURE);
    }
    EXPECT_EQ(1, results.size());
}

#if GTEST_IS_THREADSAFE

class ScopedFakeTestPartResultReporterWithThreadsTest
    : public ScopedFakeTestPartResultReporterTest
{
protected:
    static void AddFailureInOtherThread(FailureMode failure)
    {
        ThreadWithParam<FailureMode> thread(&AddFailure, failure, NULL);
        thread.Join();
    }
};

TEST_F(ScopedFakeTestPartResultReporterWithThreadsTest,
       InterceptsTestFailuresInAllThreads)
{
    TestPartResultArray results;
    {
        ScopedFakeTestPartResultReporter reporter(
            ScopedFakeTestPartResultReporter::INTERCEPT_ALL_THREADS, &results);
        AddFailure(NONFATAL_FAILURE);
        AddFailure(FATAL_FAILURE);
        AddFailureInOtherThread(NONFATAL_FAILURE);
        AddFailureInOtherThread(FATAL_FAILURE);
    }

    EXPECT_EQ(4, results.size());
    EXPECT_TRUE(results.GetTestPartResult(0).nonfatally_failed());
    EXPECT_TRUE(results.GetTestPartResult(1).fatally_failed());
    EXPECT_TRUE(results.GetTestPartResult(2).nonfatally_failed());
    EXPECT_TRUE(results.GetTestPartResult(3).fatally_failed());
}

#endif // GTEST_IS_THREADSAFE

// Tests EXPECT_FATAL_FAILURE{,ON_ALL_THREADS}.  Makes sure that they
// work even if the failure is generated in a called function rather than
// the current context.

typedef ScopedFakeTestPartResultReporterTest ExpectFatalFailureTest;

TEST_F(ExpectFatalFailureTest, CatchesFatalFaliure)
{
    EXPECT_FATAL_FAILURE(AddFatalFailure(), "Expected fatal failure.");
}

#if GTEST_HAS_GLOBAL_STRING
TEST_F(ExpectFatalFailureTest, AcceptsStringObject)
{
    EXPECT_FATAL_FAILURE(AddFatalFailure(), ::string("Expected fatal failure."));
}
#endif

TEST_F(ExpectFatalFailureTest, AcceptsStdStringObject)
{
    EXPECT_FATAL_FAILURE(AddFatalFailure(),
                         ::std::string("Expected fatal failure."));
}

TEST_F(ExpectFatalFailureTest, CatchesFatalFailureOnAllThreads)
{
    // We have another test below to verify that the macro catches fatal
    // failures generated on another thread.
    EXPECT_FATAL_FAILURE_ON_ALL_THREADS(AddFatalFailure(),
                                        "Expected fatal failure.");
}

#ifdef __BORLANDC__
// Silences warnings: "Condition is always true"
#pragma option push -w-ccc
#endif

// Tests that EXPECT_FATAL_FAILURE() can be used in a non-void
// function even when the statement in it contains ASSERT_*.

int NonVoidFunction()
{
    EXPECT_FATAL_FAILURE(ASSERT_TRUE(false), "");
    EXPECT_FATAL_FAILURE_ON_ALL_THREADS(FAIL(), "");
    return 0;
}

TEST_F(ExpectFatalFailureTest, CanBeUsedInNonVoidFunction)
{
    NonVoidFunction();
}

// Tests that EXPECT_FATAL_FAILURE(statement, ...) doesn't abort the
// current function even though 'statement' generates a fatal failure.

void DoesNotAbortHelper(bool *aborted)
{
    EXPECT_FATAL_FAILURE(ASSERT_TRUE(false), "");
    EXPECT_FATAL_FAILURE_ON_ALL_THREADS(FAIL(), "");

    *aborted = false;
}

#ifdef __BORLANDC__
// Restores warnings after previous "#pragma option push" suppressed them.
#pragma option pop
#endif

TEST_F(ExpectFatalFailureTest, DoesNotAbort)
{
    bool aborted = true;
    DoesNotAbortHelper(&aborted);
    EXPECT_FALSE(aborted);
}

// Tests that the EXPECT_FATAL_FAILURE{,_ON_ALL_THREADS} accepts a
// statement that contains a macro which expands to code containing an
// unprotected comma.

static int global_var = 0;
#define GTEST_USE_UNPROTECTED_COMMA_ global_var++, global_var++

TEST_F(ExpectFatalFailureTest, AcceptsMacroThatExpandsToUnprotectedComma)
{
#ifndef __BORLANDC__
    // ICE's in C++Builder.
    EXPECT_FATAL_FAILURE({
        GTEST_USE_UNPROTECTED_COMMA_;
        AddFatalFailure();
    },
                         "");
#endif

    EXPECT_FATAL_FAILURE_ON_ALL_THREADS({
        GTEST_USE_UNPROTECTED_COMMA_;
        AddFatalFailure();
    },
                                        "");
}

// Tests EXPECT_NONFATAL_FAILURE{,ON_ALL_THREADS}.

typedef ScopedFakeTestPartResultReporterTest ExpectNonfatalFailureTest;

TEST_F(ExpectNonfatalFailureTest, CatchesNonfatalFailure)
{
    EXPECT_NONFATAL_FAILURE(AddNonfatalFailure(),
                            "Expected non-fatal failure.");
}

#if GTEST_HAS_GLOBAL_STRING
TEST_F(ExpectNonfatalFailureTest, AcceptsStringObject)
{
    EXPECT_NONFATAL_FAILURE(AddNonfatalFailure(),
                            ::string("Expected non-fatal failure."));
}
#endif

TEST_F(ExpectNonfatalFailureTest, AcceptsStdStringObject)
{
    EXPECT_NONFATAL_FAILURE(AddNonfatalFailure(),
                            ::std::string("Expected non-fatal failure."));
}

TEST_F(ExpectNonfatalFailureTest, CatchesNonfatalFailureOnAllThreads)
{
    // We have another test below to verify that the macro catches
    // non-fatal failures generated on another thread.
    EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(AddNonfatalFailure(),
                                           "Expected non-fatal failure.");
}

// Tests that the EXPECT_NONFATAL_FAILURE{,_ON_ALL_THREADS} accepts a
// statement that contains a macro which expands to code containing an
// unprotected comma.
TEST_F(ExpectNonfatalFailureTest, AcceptsMacroThatExpandsToUnprotectedComma)
{
    EXPECT_NONFATAL_FAILURE({
        GTEST_USE_UNPROTECTED_COMMA_;
        AddNonfatalFailure();
    },
                            "");

    EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS({
        GTEST_USE_UNPROTECTED_COMMA_;
        AddNonfatalFailure();
    },
                                           "");
}

#if GTEST_IS_THREADSAFE

typedef ScopedFakeTestPartResultReporterWithThreadsTest
    ExpectFailureWithThreadsTest;

TEST_F(ExpectFailureWithThreadsTest, ExpectFatalFailureOnAllThreads)
{
    EXPECT_FATAL_FAILURE_ON_ALL_THREADS(AddFailureInOtherThread(FATAL_FAILURE),
                                        "Expected fatal failure.");
}

TEST_F(ExpectFailureWithThreadsTest, ExpectNonFatalFailureOnAllThreads)
{
    EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(
        AddFailureInOtherThread(NONFATAL_FAILURE), "Expected non-fatal failure.");
}

#endif // GTEST_IS_THREADSAFE

// Tests the TestProperty class.

TEST(TestPropertyTest, ConstructorWorks)
{
    const TestProperty property("key", "value");
    EXPECT_STREQ("key", property.key());
    EXPECT_STREQ("value", property.value());
}

TEST(TestPropertyTest, SetValue)
{
    TestProperty property("key", "value_1");
    EXPECT_STREQ("key", property.key());
    property.SetValue("value_2");
    EXPECT_STREQ("key", property.key());
    EXPECT_STREQ("value_2", property.value());
}

// Tests the TestResult class

// The test fixture for testing TestResult.
class TestResultTest : public Test
{
protected:
    typedef std::vector<TestPartResult> TPRVector;

    // We make use of 2 TestPartResult objects,
    TestPartResult *pr1, *pr2;

    // ... and 3 TestResult objects.
    TestResult *r0, *r1, *r2;

    virtual void SetUp()
    {
        // pr1 is for success.
        pr1 = new TestPartResult(TestPartResult::kSuccess,
                                 "foo/bar.cc",
                                 10,
                                 "Success!");

        // pr2 is for fatal failure.
        pr2 = new TestPartResult(TestPartResult::kFatalFailure,
                                 "foo/bar.cc",
                                 -1, // This line number means "unknown"
                                 "Failure!");

        // Creates the TestResult objects.
        r0 = new TestResult();
        r1 = new TestResult();
        r2 = new TestResult();

        // In order to test TestResult, we need to modify its internal
        // state, in particular the TestPartResult vector it holds.
        // test_part_results() returns a const reference to this vector.
        // We cast it to a non-const object s.t. it can be modified
        TPRVector *results1 = const_cast<TPRVector *>(
            &TestResultAccessor::test_part_results(*r1));
        TPRVector *results2 = const_cast<TPRVector *>(
            &TestResultAccessor::test_part_results(*r2));

        // r0 is an empty TestResult.

        // r1 contains a single SUCCESS TestPartResult.
        results1->push_back(*pr1);

        // r2 contains a SUCCESS, and a FAILURE.
        results2->push_back(*pr1);
        results2->push_back(*pr2);
    }

    virtual void TearDown()
    {
        delete pr1;
        delete pr2;

        delete r0;
        delete r1;
        delete r2;
    }

    // Helper that compares two TestPartResults.
    static void CompareTestPartResult(const TestPartResult &expected,
                                      const TestPartResult &actual)
    {
        EXPECT_EQ(expected.type(), actual.type());
        EXPECT_STREQ(expected.file_name(), actual.file_name());
        EXPECT_EQ(expected.line_number(), actual.line_number());
        EXPECT_STREQ(expected.summary(), actual.summary());
        EXPECT_STREQ(expected.message(), actual.message());
        EXPECT_EQ(expected.passed(), actual.passed());
        EXPECT_EQ(expected.failed(), actual.failed());
        EXPECT_EQ(expected.nonfatally_failed(), actual.nonfatally_failed());
        EXPECT_EQ(expected.fatally_failed(), actual.fatally_failed());
    }
};

// Tests TestResult::total_part_count().
TEST_F(TestResultTest, total_part_count)
{
    ASSERT_EQ(0, r0->total_part_count());
    ASSERT_EQ(1, r1->total_part_count());
    ASSERT_EQ(2, r2->total_part_count());
}

// Tests TestResult::Passed().
TEST_F(TestResultTest, Passed)
{
    ASSERT_TRUE(r0->Passed());
    ASSERT_TRUE(r1->Passed());
    ASSERT_FALSE(r2->Passed());
}

// Tests TestResult::Failed().
TEST_F(TestResultTest, Failed)
{
    ASSERT_FALSE(r0->Failed());
    ASSERT_FALSE(r1->Failed());
    ASSERT_TRUE(r2->Failed());
}

// Tests TestResult::GetTestPartResult().

typedef TestResultTest TestResultDeathTest;

TEST_F(TestResultDeathTest, GetTestPartResult)
{
    CompareTestPartResult(*pr1, r2->GetTestPartResult(0));
    CompareTestPartResult(*pr2, r2->GetTestPartResult(1));
    EXPECT_DEATH_IF_SUPPORTED(r2->GetTestPartResult(2), "");
    EXPECT_DEATH_IF_SUPPORTED(r2->GetTestPartResult(-1), "");
}

// Tests TestResult has no properties when none are added.
TEST(TestResultPropertyTest, NoPropertiesFoundWhenNoneAreAdded)
{
    TestResult test_result;
    ASSERT_EQ(0, test_result.test_property_count());
}

// Tests TestResult has the expected property when added.
TEST(TestResultPropertyTest, OnePropertyFoundWhenAdded)
{
    TestResult test_result;
    TestProperty property("key_1", "1");
    TestResultAccessor::RecordProperty(&test_result, "testcase", property);
    ASSERT_EQ(1, test_result.test_property_count());
    const TestProperty &actual_property = test_result.GetTestProperty(0);
    EXPECT_STREQ("key_1", actual_property.key());
    EXPECT_STREQ("1", actual_property.value());
}

// Tests TestResult has multiple properties when added.
TEST(TestResultPropertyTest, MultiplePropertiesFoundWhenAdded)
{
    TestResult test_result;
    TestProperty property_1("key_1", "1");
    TestProperty property_2("key_2", "2");
    TestResultAccessor::RecordProperty(&test_result, "testcase", property_1);
    TestResultAccessor::RecordProperty(&test_result, "testcase", property_2);
    ASSERT_EQ(2, test_result.test_property_count());
    const TestProperty &actual_property_1 = test_result.GetTestProperty(0);
    EXPECT_STREQ("key_1", actual_property_1.key());
    EXPECT_STREQ("1", actual_property_1.value());

    const TestProperty &actual_property_2 = test_result.GetTestProperty(1);
    EXPECT_STREQ("key_2", actual_property_2.key());
    EXPECT_STREQ("2", actual_property_2.value());
}

// Tests TestResult::RecordProperty() overrides values for duplicate keys.
TEST(TestResultPropertyTest, OverridesValuesForDuplicateKeys)
{
    TestResult test_result;
    TestProperty property_1_1("key_1", "1");
    TestProperty property_2_1("key_2", "2");
    TestProperty property_1_2("key_1", "12");
    TestProperty property_2_2("key_2", "22");
    TestResultAccessor::RecordProperty(&test_result, "testcase", property_1_1);
    TestResultAccessor::RecordProperty(&test_result, "testcase", property_2_1);
    TestResultAccessor::RecordProperty(&test_result, "testcase", property_1_2);
    TestResultAccessor::RecordProperty(&test_result, "testcase", property_2_2);

    ASSERT_EQ(2, test_result.test_property_count());
    const TestProperty &actual_property_1 = test_result.GetTestProperty(0);
    EXPECT_STREQ("key_1", actual_property_1.key());
    EXPECT_STREQ("12", actual_property_1.value());

    const TestProperty &actual_property_2 = test_result.GetTestProperty(1);
    EXPECT_STREQ("key_2", actual_property_2.key());
    EXPECT_STREQ("22", actual_property_2.value());
}

// Tests TestResult::GetTestProperty().
TEST(TestResultPropertyTest, GetTestProperty)
{
    TestResult test_result;
    TestProperty property_1("key_1", "1");
    TestProperty property_2("key_2", "2");
    TestProperty property_3("key_3", "3");
    TestResultAccessor::RecordProperty(&test_result, "testcase", property_1);
    TestResultAccessor::RecordProperty(&test_result, "testcase", property_2);
    TestResultAccessor::RecordProperty(&test_result, "testcase", property_3);

    const TestProperty &fetched_property_1 = test_result.GetTestProperty(0);
    const TestProperty &fetched_property_2 = test_result.GetTestProperty(1);
    const TestProperty &fetched_property_3 = test_result.GetTestProperty(2);

    EXPECT_STREQ("key_1", fetched_property_1.key());
    EXPECT_STREQ("1", fetched_property_1.value());

    EXPECT_STREQ("key_2", fetched_property_2.key());
    EXPECT_STREQ("2", fetched_property_2.value());

    EXPECT_STREQ("key_3", fetched_property_3.key());
    EXPECT_STREQ("3", fetched_property_3.value());

    EXPECT_DEATH_IF_SUPPORTED(test_result.GetTestProperty(3), "");
    EXPECT_DEATH_IF_SUPPORTED(test_result.GetTestProperty(-1), "");
}

// Tests the Test class.
//
// It's difficult to test every public method of this class (we are
// already stretching the limit of Google Test by using it to test itself!).
// Fortunately, we don't have to do that, as we are already testing
// the functionalities of the Test class extensively by using Google Test
// alone.
//
// Therefore, this section only contains one test.

// Tests that GTestFlagSaver works on Windows and Mac.

class GTestFlagSaverTest : public Test
{
protected:
    // Saves the Google Test flags such that we can restore them later, and
    // then sets them to their default values.  This will be called
    // before the first test in this test case is run.
    static void SetUpTestCase()
    {
        saver_ = new GTestFlagSaver;

        GTEST_FLAG(also_run_disabled_tests) = false;
        GTEST_FLAG(break_on_failure) = false;
        GTEST_FLAG(catch_exceptions) = false;
        GTEST_FLAG(death_test_use_fork) = false;
        GTEST_FLAG(color) = "auto";
        GTEST_FLAG(filter) = "";
        GTEST_FLAG(list_tests) = false;
        GTEST_FLAG(output) = "";
        GTEST_FLAG(print_time) = true;
        GTEST_FLAG(random_seed) = 0;
        GTEST_FLAG(repeat) = 1;
        GTEST_FLAG(shuffle) = false;
        GTEST_FLAG(stack_trace_depth) = kMaxStackTraceDepth;
        GTEST_FLAG(stream_result_to) = "";
        GTEST_FLAG(throw_on_failure) = false;
    }

    // Restores the Google Test flags that the tests have modified.  This will
    // be called after the last test in this test case is run.
    static void TearDownTestCase()
    {
        delete saver_;
        saver_ = NULL;
    }

    // Verifies that the Google Test flags have their default values, and then
    // modifies each of them.
    void VerifyAndModifyFlags()
    {
        EXPECT_FALSE(GTEST_FLAG(also_run_disabled_tests));
        EXPECT_FALSE(GTEST_FLAG(break_on_failure));
        EXPECT_FALSE(GTEST_FLAG(catch_exceptions));
        EXPECT_STREQ("auto", GTEST_FLAG(color).c_str());
        EXPECT_FALSE(GTEST_FLAG(death_test_use_fork));
        EXPECT_STREQ("", GTEST_FLAG(filter).c_str());
        EXPECT_FALSE(GTEST_FLAG(list_tests));
        EXPECT_STREQ("", GTEST_FLAG(output).c_str());
        EXPECT_TRUE(GTEST_FLAG(print_time));
        EXPECT_EQ(0, GTEST_FLAG(random_seed));
        EXPECT_EQ(1, GTEST_FLAG(repeat));
        EXPECT_FALSE(GTEST_FLAG(shuffle));
        EXPECT_EQ(kMaxStackTraceDepth, GTEST_FLAG(stack_trace_depth));
        EXPECT_STREQ("", GTEST_FLAG(stream_result_to).c_str());
        EXPECT_FALSE(GTEST_FLAG(throw_on_failure));

        GTEST_FLAG(also_run_disabled_tests) = true;
        GTEST_FLAG(break_on_failure) = true;
        GTEST_FLAG(catch_exceptions) = true;
        GTEST_FLAG(color) = "no";
        GTEST_FLAG(death_test_use_fork) = true;
        GTEST_FLAG(filter) = "abc";
        GTEST_FLAG(list_tests) = true;
        GTEST_FLAG(output) = "xml:foo.xml";
        GTEST_FLAG(print_time) = false;
        GTEST_FLAG(random_seed) = 1;
        GTEST_FLAG(repeat) = 100;
        GTEST_FLAG(shuffle) = true;
        GTEST_FLAG(stack_trace_depth) = 1;
        GTEST_FLAG(stream_result_to) = "localhost:1234";
        GTEST_FLAG(throw_on_failure) = true;
    }

private:
    // For saving Google Test flags during this test case.
    static GTestFlagSaver *saver_;
};

GTestFlagSaver *GTestFlagSaverTest::saver_ = NULL;

// Google Test doesn't guarantee the order of tests.  The following two
// tests are designed to work regardless of their order.

// Modifies the Google Test flags in the test body.
TEST_F(GTestFlagSaverTest, ModifyGTestFlags)
{
    VerifyAndModifyFlags();
}

// Verifies that the Google Test flags in the body of the previous test were
// restored to their original values.
TEST_F(GTestFlagSaverTest, VerifyGTestFlags)
{
    VerifyAndModifyFlags();
}

// Sets an environment variable with the given name to the given
// value.  If the value argument is "", unsets the environment
// variable.  The caller must ensure that both arguments are not NULL.
static void SetEnv(const char *name, const char *value)
{
#if GTEST_OS_WINDOWS_MOBILE
    // Environment variables are not supported on Windows CE.
    return;
#elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9)
    // C++Builder's putenv only stores a pointer to its parameter; we have to
    // ensure that the string remains valid as long as it might be needed.
    // We use an std::map to do so.
    static std::map<std::string, std::string *> added_env;

    // Because putenv stores a pointer to the string buffer, we can't delete the
    // previous string (if present) until after it's replaced.
    std::string *prev_env = NULL;
    if (added_env.find(name) != added_env.end()) {
        prev_env = added_env[name];
    }
    added_env[name] = new std::string(
        (Message() << name << "=" << value).GetString());

    // The standard signature of putenv accepts a 'char*' argument. Other
    // implementations, like C++Builder's, accept a 'const char*'.
    // We cast away the 'const' since that would work for both variants.
    putenv(const_cast<char *>(added_env[name]->c_str()));
    delete prev_env;
#elif GTEST_OS_WINDOWS // If we are on Windows proper.
    _putenv((Message() << name << "=" << value).GetString().c_str());
#else
    if (*value == '\0') {
        unsetenv(name);
    } else {
        setenv(name, value, 1);
    }
#endif // GTEST_OS_WINDOWS_MOBILE
}

#if !GTEST_OS_WINDOWS_MOBILE
// Environment variables are not supported on Windows CE.

using testing::internal::Int32FromGTestEnv;

// Tests Int32FromGTestEnv().

// Tests that Int32FromGTestEnv() returns the default value when the
// environment variable is not set.
TEST(Int32FromGTestEnvTest, ReturnsDefaultWhenVariableIsNotSet)
{
    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "");
    EXPECT_EQ(10, Int32FromGTestEnv("temp", 10));
}

#if !defined(GTEST_GET_INT32_FROM_ENV_)

// Tests that Int32FromGTestEnv() returns the default value when the
// environment variable overflows as an Int32.
TEST(Int32FromGTestEnvTest, ReturnsDefaultWhenValueOverflows)
{
    printf("(expecting 2 warnings)\n");

    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "12345678987654321");
    EXPECT_EQ(20, Int32FromGTestEnv("temp", 20));

    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "-12345678987654321");
    EXPECT_EQ(30, Int32FromGTestEnv("temp", 30));
}

// Tests that Int32FromGTestEnv() returns the default value when the
// environment variable does not represent a valid decimal integer.
TEST(Int32FromGTestEnvTest, ReturnsDefaultWhenValueIsInvalid)
{
    printf("(expecting 2 warnings)\n");

    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "A1");
    EXPECT_EQ(40, Int32FromGTestEnv("temp", 40));

    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "12X");
    EXPECT_EQ(50, Int32FromGTestEnv("temp", 50));
}

#endif // !defined(GTEST_GET_INT32_FROM_ENV_)

// Tests that Int32FromGTestEnv() parses and returns the value of the
// environment variable when it represents a valid decimal integer in
// the range of an Int32.
TEST(Int32FromGTestEnvTest, ParsesAndReturnsValidValue)
{
    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "123");
    EXPECT_EQ(123, Int32FromGTestEnv("temp", 0));

    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "-321");
    EXPECT_EQ(-321, Int32FromGTestEnv("temp", 0));
}
#endif // !GTEST_OS_WINDOWS_MOBILE

// Tests ParseInt32Flag().

// Tests that ParseInt32Flag() returns false and doesn't change the
// output value when the flag has wrong format
TEST(ParseInt32FlagTest, ReturnsFalseForInvalidFlag)
{
    Int32 value = 123;
    EXPECT_FALSE(ParseInt32Flag("--a=100", "b", &value));
    EXPECT_EQ(123, value);

    EXPECT_FALSE(ParseInt32Flag("a=100", "a", &value));
    EXPECT_EQ(123, value);
}

// Tests that ParseInt32Flag() returns false and doesn't change the
// output value when the flag overflows as an Int32.
TEST(ParseInt32FlagTest, ReturnsDefaultWhenValueOverflows)
{
    printf("(expecting 2 warnings)\n");

    Int32 value = 123;
    EXPECT_FALSE(ParseInt32Flag("--abc=12345678987654321", "abc", &value));
    EXPECT_EQ(123, value);

    EXPECT_FALSE(ParseInt32Flag("--abc=-12345678987654321", "abc", &value));
    EXPECT_EQ(123, value);
}

// Tests that ParseInt32Flag() returns false and doesn't change the
// output value when the flag does not represent a valid decimal
// integer.
TEST(ParseInt32FlagTest, ReturnsDefaultWhenValueIsInvalid)
{
    printf("(expecting 2 warnings)\n");

    Int32 value = 123;
    EXPECT_FALSE(ParseInt32Flag("--abc=A1", "abc", &value));
    EXPECT_EQ(123, value);

    EXPECT_FALSE(ParseInt32Flag("--abc=12X", "abc", &value));
    EXPECT_EQ(123, value);
}

// Tests that ParseInt32Flag() parses the value of the flag and
// returns true when the flag represents a valid decimal integer in
// the range of an Int32.
TEST(ParseInt32FlagTest, ParsesAndReturnsValidValue)
{
    Int32 value = 123;
    EXPECT_TRUE(ParseInt32Flag("--" GTEST_FLAG_PREFIX_ "abc=456", "abc", &value));
    EXPECT_EQ(456, value);

    EXPECT_TRUE(ParseInt32Flag("--" GTEST_FLAG_PREFIX_ "abc=-789",
                               "abc", &value));
    EXPECT_EQ(-789, value);
}

// Tests that Int32FromEnvOrDie() parses the value of the var or
// returns the correct default.
// Environment variables are not supported on Windows CE.
#if !GTEST_OS_WINDOWS_MOBILE
TEST(Int32FromEnvOrDieTest, ParsesAndReturnsValidValue)
{
    EXPECT_EQ(333, Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", 333));
    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", "123");
    EXPECT_EQ(123, Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", 333));
    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", "-123");
    EXPECT_EQ(-123, Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", 333));
}
#endif // !GTEST_OS_WINDOWS_MOBILE

// Tests that Int32FromEnvOrDie() aborts with an error message
// if the variable is not an Int32.
TEST(Int32FromEnvOrDieDeathTest, AbortsOnFailure)
{
    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "VAR", "xxx");
    EXPECT_DEATH_IF_SUPPORTED(
        Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "VAR", 123),
        ".*");
}

// Tests that Int32FromEnvOrDie() aborts with an error message
// if the variable cannot be represented by an Int32.
TEST(Int32FromEnvOrDieDeathTest, AbortsOnInt32Overflow)
{
    SetEnv(GTEST_FLAG_PREFIX_UPPER_ "VAR", "1234567891234567891234");
    EXPECT_DEATH_IF_SUPPORTED(
        Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "VAR", 123),
        ".*");
}

// Tests that ShouldRunTestOnShard() selects all tests
// where there is 1 shard.
TEST(ShouldRunTestOnShardTest, IsPartitionWhenThereIsOneShard)
{
    EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 0));
    EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 1));
    EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 2));
    EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 3));
    EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 4));
}

class ShouldShardTest : public testing::Test
{
protected:
    virtual void SetUp()
    {
        index_var_ = GTEST_FLAG_PREFIX_UPPER_ "INDEX";
        total_var_ = GTEST_FLAG_PREFIX_UPPER_ "TOTAL";
    }

    virtual void TearDown()
    {
        SetEnv(index_var_, "");
        SetEnv(total_var_, "");
    }

    const char *index_var_;
    const char *total_var_;
};

// Tests that sharding is disabled if neither of the environment variables
// are set.
TEST_F(ShouldShardTest, ReturnsFalseWhenNeitherEnvVarIsSet)
{
    SetEnv(index_var_, "");
    SetEnv(total_var_, "");

    EXPECT_FALSE(ShouldShard(total_var_, index_var_, false));
    EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));
}

// Tests that sharding is not enabled if total_shards  == 1.
TEST_F(ShouldShardTest, ReturnsFalseWhenTotalShardIsOne)
{
    SetEnv(index_var_, "0");
    SetEnv(total_var_, "1");
    EXPECT_FALSE(ShouldShard(total_var_, index_var_, false));
    EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));
}

// Tests that sharding is enabled if total_shards > 1 and
// we are not in a death test subprocess.
// Environment variables are not supported on Windows CE.
#if !GTEST_OS_WINDOWS_MOBILE
TEST_F(ShouldShardTest, WorksWhenShardEnvVarsAreValid)
{
    SetEnv(index_var_, "4");
    SetEnv(total_var_, "22");
    EXPECT_TRUE(ShouldShard(total_var_, index_var_, false));
    EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));

    SetEnv(index_var_, "8");
    SetEnv(total_var_, "9");
    EXPECT_TRUE(ShouldShard(total_var_, index_var_, false));
    EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));

    SetEnv(index_var_, "0");
    SetEnv(total_var_, "9");
    EXPECT_TRUE(ShouldShard(total_var_, index_var_, false));
    EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));
}
#endif // !GTEST_OS_WINDOWS_MOBILE

// Tests that we exit in error if the sharding values are not valid.

typedef ShouldShardTest ShouldShardDeathTest;

TEST_F(ShouldShardDeathTest, AbortsWhenShardingEnvVarsAreInvalid)
{
    SetEnv(index_var_, "4");
    SetEnv(total_var_, "4");
    EXPECT_DEATH_IF_SUPPORTED(ShouldShard(total_var_, index_var_, false), ".*");

    SetEnv(index_var_, "4");
    SetEnv(total_var_, "-2");
    EXPECT_DEATH_IF_SUPPORTED(ShouldShard(total_var_, index_var_, false), ".*");

    SetEnv(index_var_, "5");
    SetEnv(total_var_, "");
    EXPECT_DEATH_IF_SUPPORTED(ShouldShard(total_var_, index_var_, false), ".*");

    SetEnv(index_var_, "");
    SetEnv(total_var_, "5");
    EXPECT_DEATH_IF_SUPPORTED(ShouldShard(total_var_, index_var_, false), ".*");
}

// Tests that ShouldRunTestOnShard is a partition when 5
// shards are used.
TEST(ShouldRunTestOnShardTest, IsPartitionWhenThereAreFiveShards)
{
    // Choose an arbitrary number of tests and shards.
    const int num_tests = 17;
    const int num_shards = 5;

    // Check partitioning: each test should be on exactly 1 shard.
    for (int test_id = 0; test_id < num_tests; test_id++) {
        int prev_selected_shard_index = -1;
        for (int shard_index = 0; shard_index < num_shards; shard_index++) {
            if (ShouldRunTestOnShard(num_shards, shard_index, test_id)) {
                if (prev_selected_shard_index < 0) {
                    prev_selected_shard_index = shard_index;
                } else {
                    ADD_FAILURE() << "Shard " << prev_selected_shard_index << " and "
                                  << shard_index << " are both selected to run test " << test_id;
                }
            }
        }
    }

    // Check balance: This is not required by the sharding protocol, but is a
    // desirable property for performance.
    for (int shard_index = 0; shard_index < num_shards; shard_index++) {
        int num_tests_on_shard = 0;
        for (int test_id = 0; test_id < num_tests; test_id++) {
            num_tests_on_shard +=
                ShouldRunTestOnShard(num_shards, shard_index, test_id);
        }
        EXPECT_GE(num_tests_on_shard, num_tests / num_shards);
    }
}

// For the same reason we are not explicitly testing everything in the
// Test class, there are no separate tests for the following classes
// (except for some trivial cases):
//
//   TestCase, UnitTest, UnitTestResultPrinter.
//
// Similarly, there are no separate tests for the following macros:
//
//   TEST, TEST_F, RUN_ALL_TESTS

TEST(UnitTestTest, CanGetOriginalWorkingDir)
{
    ASSERT_TRUE(UnitTest::GetInstance()->original_working_dir() != NULL);
    EXPECT_STRNE(UnitTest::GetInstance()->original_working_dir(), "");
}

TEST(UnitTestTest, ReturnsPlausibleTimestamp)
{
    EXPECT_LT(0, UnitTest::GetInstance()->start_timestamp());
    EXPECT_LE(UnitTest::GetInstance()->start_timestamp(), GetTimeInMillis());
}

// When a property using a reserved key is supplied to this function, it
// tests that a non-fatal failure is added, a fatal failure is not added,
// and that the property is not recorded.
void ExpectNonFatalFailureRecordingPropertyWithReservedKey(
    const TestResult &test_result, const char *key)
{
    EXPECT_NONFATAL_FAILURE(Test::RecordProperty(key, "1"), "Reserved key");
    ASSERT_EQ(0, test_result.test_property_count()) << "Property for key '" << key
                                                    << "' recorded unexpectedly.";
}

void ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
    const char *key)
{
    const TestInfo *test_info = UnitTest::GetInstance()->current_test_info();
    ASSERT_TRUE(test_info != NULL);
    ExpectNonFatalFailureRecordingPropertyWithReservedKey(*test_info->result(),
                                                          key);
}

void ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
    const char *key)
{
    const TestCase *test_case = UnitTest::GetInstance()->current_test_case();
    ASSERT_TRUE(test_case != NULL);
    ExpectNonFatalFailureRecordingPropertyWithReservedKey(
        test_case->ad_hoc_test_result(), key);
}

void ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
    const char *key)
{
    ExpectNonFatalFailureRecordingPropertyWithReservedKey(
        UnitTest::GetInstance()->ad_hoc_test_result(), key);
}

// Tests that property recording functions in UnitTest outside of tests
// functions correcly.  Creating a separate instance of UnitTest ensures it
// is in a state similar to the UnitTest's singleton's between tests.
class UnitTestRecordPropertyTest : public testing::internal::UnitTestRecordPropertyTestHelper
{
public:
    static void SetUpTestCase()
    {
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
            "disabled");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
            "errors");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
            "failures");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
            "name");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
            "tests");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
            "time");

        Test::RecordProperty("test_case_key_1", "1");
        const TestCase *test_case = UnitTest::GetInstance()->current_test_case();
        ASSERT_TRUE(test_case != NULL);

        ASSERT_EQ(1, test_case->ad_hoc_test_result().test_property_count());
        EXPECT_STREQ("test_case_key_1",
                     test_case->ad_hoc_test_result().GetTestProperty(0).key());
        EXPECT_STREQ("1",
                     test_case->ad_hoc_test_result().GetTestProperty(0).value());
    }
};

// Tests TestResult has the expected property when added.
TEST_F(UnitTestRecordPropertyTest, OnePropertyFoundWhenAdded)
{
    UnitTestRecordProperty("key_1", "1");

    ASSERT_EQ(1, unit_test_.ad_hoc_test_result().test_property_count());

    EXPECT_STREQ("key_1",
                 unit_test_.ad_hoc_test_result().GetTestProperty(0).key());
    EXPECT_STREQ("1",
                 unit_test_.ad_hoc_test_result().GetTestProperty(0).value());
}

// Tests TestResult has multiple properties when added.
TEST_F(UnitTestRecordPropertyTest, MultiplePropertiesFoundWhenAdded)
{
    UnitTestRecordProperty("key_1", "1");
    UnitTestRecordProperty("key_2", "2");

    ASSERT_EQ(2, unit_test_.ad_hoc_test_result().test_property_count());

    EXPECT_STREQ("key_1",
                 unit_test_.ad_hoc_test_result().GetTestProperty(0).key());
    EXPECT_STREQ("1", unit_test_.ad_hoc_test_result().GetTestProperty(0).value());

    EXPECT_STREQ("key_2",
                 unit_test_.ad_hoc_test_result().GetTestProperty(1).key());
    EXPECT_STREQ("2", unit_test_.ad_hoc_test_result().GetTestProperty(1).value());
}

// Tests TestResult::RecordProperty() overrides values for duplicate keys.
TEST_F(UnitTestRecordPropertyTest, OverridesValuesForDuplicateKeys)
{
    UnitTestRecordProperty("key_1", "1");
    UnitTestRecordProperty("key_2", "2");
    UnitTestRecordProperty("key_1", "12");
    UnitTestRecordProperty("key_2", "22");

    ASSERT_EQ(2, unit_test_.ad_hoc_test_result().test_property_count());

    EXPECT_STREQ("key_1",
                 unit_test_.ad_hoc_test_result().GetTestProperty(0).key());
    EXPECT_STREQ("12",
                 unit_test_.ad_hoc_test_result().GetTestProperty(0).value());

    EXPECT_STREQ("key_2",
                 unit_test_.ad_hoc_test_result().GetTestProperty(1).key());
    EXPECT_STREQ("22",
                 unit_test_.ad_hoc_test_result().GetTestProperty(1).value());
}

TEST_F(UnitTestRecordPropertyTest,
       AddFailureInsideTestsWhenUsingTestCaseReservedKeys)
{
    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
        "name");
    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
        "value_param");
    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
        "type_param");
    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
        "status");
    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
        "time");
    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
        "classname");
}

TEST_F(UnitTestRecordPropertyTest,
       AddRecordWithReservedKeysGeneratesCorrectPropertyList)
{
    EXPECT_NONFATAL_FAILURE(
        Test::RecordProperty("name", "1"),
        "'classname', 'name', 'status', 'time', 'type_param', 'value_param',"
        " 'file', and 'line' are reserved");
}

class UnitTestRecordPropertyTestEnvironment : public Environment
{
public:
    virtual void TearDown()
    {
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
            "tests");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
            "failures");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
            "disabled");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
            "errors");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
            "name");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
            "timestamp");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
            "time");
        ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
            "random_seed");
    }
};

// This will test property recording outside of any test or test case.
static Environment *record_property_env GTEST_ATTRIBUTE_UNUSED_ =
    AddGlobalTestEnvironment(new UnitTestRecordPropertyTestEnvironment);

// This group of tests is for predicate assertions (ASSERT_PRED*, etc)
// of various arities.  They do not attempt to be exhaustive.  Rather,
// view them as smoke tests that can be easily reviewed and verified.
// A more complete set of tests for predicate assertions can be found
// in gtest_pred_impl_unittest.cc.

// First, some predicates and predicate-formatters needed by the tests.

// Returns true iff the argument is an even number.
bool IsEven(int n)
{
    return (n % 2) == 0;
}

// A functor that returns true iff the argument is an even number.
struct IsEvenFunctor {
    bool operator()(int n) { return IsEven(n); }
};

// A predicate-formatter function that asserts the argument is an even
// number.
AssertionResult AssertIsEven(const char *expr, int n)
{
    if (IsEven(n)) {
        return AssertionSuccess();
    }

    Message msg;
    msg << expr << " evaluates to " << n << ", which is not even.";
    return AssertionFailure(msg);
}

// A predicate function that returns AssertionResult for use in
// EXPECT/ASSERT_TRUE/FALSE.
AssertionResult ResultIsEven(int n)
{
    if (IsEven(n))
        return AssertionSuccess() << n << " is even";
    else
        return AssertionFailure() << n << " is odd";
}

// A predicate function that returns AssertionResult but gives no
// explanation why it succeeds. Needed for testing that
// EXPECT/ASSERT_FALSE handles such functions correctly.
AssertionResult ResultIsEvenNoExplanation(int n)
{
    if (IsEven(n))
        return AssertionSuccess();
    else
        return AssertionFailure() << n << " is odd";
}

// A predicate-formatter functor that asserts the argument is an even
// number.
struct AssertIsEvenFunctor {
    AssertionResult operator()(const char *expr, int n)
    {
        return AssertIsEven(expr, n);
    }
};

// Returns true iff the sum of the arguments is an even number.
bool SumIsEven2(int n1, int n2)
{
    return IsEven(n1 + n2);
}

// A functor that returns true iff the sum of the arguments is an even
// number.
struct SumIsEven3Functor {
    bool operator()(int n1, int n2, int n3)
    {
        return IsEven(n1 + n2 + n3);
    }
};

// A predicate-formatter function that asserts the sum of the
// arguments is an even number.
AssertionResult AssertSumIsEven4(
    const char *e1, const char *e2, const char *e3, const char *e4,
    int n1, int n2, int n3, int n4)
{
    const int sum = n1 + n2 + n3 + n4;
    if (IsEven(sum)) {
        return AssertionSuccess();
    }

    Message msg;
    msg << e1 << " + " << e2 << " + " << e3 << " + " << e4
        << " (" << n1 << " + " << n2 << " + " << n3 << " + " << n4
        << ") evaluates to " << sum << ", which is not even.";
    return AssertionFailure(msg);
}

// A predicate-formatter functor that asserts the sum of the arguments
// is an even number.
struct AssertSumIsEven5Functor {
    AssertionResult operator()(
        const char *e1, const char *e2, const char *e3, const char *e4,
        const char *e5, int n1, int n2, int n3, int n4, int n5)
    {
        const int sum = n1 + n2 + n3 + n4 + n5;
        if (IsEven(sum)) {
            return AssertionSuccess();
        }

        Message msg;
        msg << e1 << " + " << e2 << " + " << e3 << " + " << e4 << " + " << e5
            << " ("
            << n1 << " + " << n2 << " + " << n3 << " + " << n4 << " + " << n5
            << ") evaluates to " << sum << ", which is not even.";
        return AssertionFailure(msg);
    }
};

// Tests unary predicate assertions.

// Tests unary predicate assertions that don't use a custom formatter.
TEST(Pred1Test, WithoutFormat)
{
    // Success cases.
    EXPECT_PRED1(IsEvenFunctor(), 2) << "This failure is UNEXPECTED!";
    ASSERT_PRED1(IsEven, 4);

    // Failure cases.
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED1(IsEven, 5) << "This failure is expected.";
    },
                            "This failure is expected.");
    EXPECT_FATAL_FAILURE(ASSERT_PRED1(IsEvenFunctor(), 5),
                         "evaluates to false");
}

// Tests unary predicate assertions that use a custom formatter.
TEST(Pred1Test, WithFormat)
{
    // Success cases.
    EXPECT_PRED_FORMAT1(AssertIsEven, 2);
    ASSERT_PRED_FORMAT1(AssertIsEvenFunctor(), 4)
        << "This failure is UNEXPECTED!";

    // Failure cases.
    const int n = 5;
    EXPECT_NONFATAL_FAILURE(EXPECT_PRED_FORMAT1(AssertIsEvenFunctor(), n),
                            "n evaluates to 5, which is not even.");
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_PRED_FORMAT1(AssertIsEven, 5) << "This failure is expected.";
    },
                         "This failure is expected.");
}

// Tests that unary predicate assertions evaluates their arguments
// exactly once.
TEST(Pred1Test, SingleEvaluationOnFailure)
{
    // A success case.
    static int n = 0;
    EXPECT_PRED1(IsEven, n++);
    EXPECT_EQ(1, n) << "The argument is not evaluated exactly once.";

    // A failure case.
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_PRED_FORMAT1(AssertIsEvenFunctor(), n++)
            << "This failure is expected.";
    },
                         "This failure is expected.");
    EXPECT_EQ(2, n) << "The argument is not evaluated exactly once.";
}

// Tests predicate assertions whose arity is >= 2.

// Tests predicate assertions that don't use a custom formatter.
TEST(PredTest, WithoutFormat)
{
    // Success cases.
    ASSERT_PRED2(SumIsEven2, 2, 4) << "This failure is UNEXPECTED!";
    EXPECT_PRED3(SumIsEven3Functor(), 4, 6, 8);

    // Failure cases.
    const int n1 = 1;
    const int n2 = 2;
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED2(SumIsEven2, n1, n2) << "This failure is expected.";
    },
                            "This failure is expected.");
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_PRED3(SumIsEven3Functor(), 1, 2, 4);
    },
                         "evaluates to false");
}

// Tests predicate assertions that use a custom formatter.
TEST(PredTest, WithFormat)
{
    // Success cases.
    ASSERT_PRED_FORMAT4(AssertSumIsEven4, 4, 6, 8, 10) << "This failure is UNEXPECTED!";
    EXPECT_PRED_FORMAT5(AssertSumIsEven5Functor(), 2, 4, 6, 8, 10);

    // Failure cases.
    const int n1 = 1;
    const int n2 = 2;
    const int n3 = 4;
    const int n4 = 6;
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED_FORMAT4(AssertSumIsEven4, n1, n2, n3, n4);
    },
                            "evaluates to 13, which is not even.");
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_PRED_FORMAT5(AssertSumIsEven5Functor(), 1, 2, 4, 6, 8)
            << "This failure is expected.";
    },
                         "This failure is expected.");
}

// Tests that predicate assertions evaluates their arguments
// exactly once.
TEST(PredTest, SingleEvaluationOnFailure)
{
    // A success case.
    int n1 = 0;
    int n2 = 0;
    EXPECT_PRED2(SumIsEven2, n1++, n2++);
    EXPECT_EQ(1, n1) << "Argument 1 is not evaluated exactly once.";
    EXPECT_EQ(1, n2) << "Argument 2 is not evaluated exactly once.";

    // Another success case.
    n1 = n2 = 0;
    int n3 = 0;
    int n4 = 0;
    int n5 = 0;
    ASSERT_PRED_FORMAT5(AssertSumIsEven5Functor(),
                        n1++, n2++, n3++, n4++, n5++)
        << "This failure is UNEXPECTED!";
    EXPECT_EQ(1, n1) << "Argument 1 is not evaluated exactly once.";
    EXPECT_EQ(1, n2) << "Argument 2 is not evaluated exactly once.";
    EXPECT_EQ(1, n3) << "Argument 3 is not evaluated exactly once.";
    EXPECT_EQ(1, n4) << "Argument 4 is not evaluated exactly once.";
    EXPECT_EQ(1, n5) << "Argument 5 is not evaluated exactly once.";

    // A failure case.
    n1 = n2 = n3 = 0;
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED3(SumIsEven3Functor(), ++n1, n2++, n3++)
            << "This failure is expected.";
    },
                            "This failure is expected.");
    EXPECT_EQ(1, n1) << "Argument 1 is not evaluated exactly once.";
    EXPECT_EQ(1, n2) << "Argument 2 is not evaluated exactly once.";
    EXPECT_EQ(1, n3) << "Argument 3 is not evaluated exactly once.";

    // Another failure case.
    n1 = n2 = n3 = n4 = 0;
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED_FORMAT4(AssertSumIsEven4, ++n1, n2++, n3++, n4++);
    },
                            "evaluates to 1, which is not even.");
    EXPECT_EQ(1, n1) << "Argument 1 is not evaluated exactly once.";
    EXPECT_EQ(1, n2) << "Argument 2 is not evaluated exactly once.";
    EXPECT_EQ(1, n3) << "Argument 3 is not evaluated exactly once.";
    EXPECT_EQ(1, n4) << "Argument 4 is not evaluated exactly once.";
}

// Some helper functions for testing using overloaded/template
// functions with ASSERT_PREDn and EXPECT_PREDn.

bool IsPositive(double x)
{
    return x > 0;
}

template<typename T>
bool IsNegative(T x)
{
    return x < 0;
}

template<typename T1, typename T2>
bool GreaterThan(T1 x1, T2 x2)
{
    return x1 > x2;
}

// Tests that overloaded functions can be used in *_PRED* as long as
// their types are explicitly specified.
TEST(PredicateAssertionTest, AcceptsOverloadedFunction)
{
    // C++Builder requires C-style casts rather than static_cast.
    EXPECT_PRED1((bool (*)(int))(IsPositive), 5); // NOLINT
    ASSERT_PRED1((bool (*)(double))(IsPositive), 6.0); // NOLINT
}

// Tests that template functions can be used in *_PRED* as long as
// their types are explicitly specified.
TEST(PredicateAssertionTest, AcceptsTemplateFunction)
{
    EXPECT_PRED1(IsNegative<int>, -5);
    // Makes sure that we can handle templates with more than one
    // parameter.
    ASSERT_PRED2((GreaterThan<int, int>), 5, 0);
}

// Some helper functions for testing using overloaded/template
// functions with ASSERT_PRED_FORMATn and EXPECT_PRED_FORMATn.

AssertionResult IsPositiveFormat(const char * /* expr */, int n)
{
    return n > 0 ? AssertionSuccess() : AssertionFailure(Message() << "Failure");
}

AssertionResult IsPositiveFormat(const char * /* expr */, double x)
{
    return x > 0 ? AssertionSuccess() : AssertionFailure(Message() << "Failure");
}

template<typename T>
AssertionResult IsNegativeFormat(const char * /* expr */, T x)
{
    return x < 0 ? AssertionSuccess() : AssertionFailure(Message() << "Failure");
}

template<typename T1, typename T2>
AssertionResult EqualsFormat(const char * /* expr1 */, const char * /* expr2 */,
                             const T1 &x1, const T2 &x2)
{
    return x1 == x2 ? AssertionSuccess() : AssertionFailure(Message() << "Failure");
}

// Tests that overloaded functions can be used in *_PRED_FORMAT*
// without explicitly specifying their types.
TEST(PredicateFormatAssertionTest, AcceptsOverloadedFunction)
{
    EXPECT_PRED_FORMAT1(IsPositiveFormat, 5);
    ASSERT_PRED_FORMAT1(IsPositiveFormat, 6.0);
}

// Tests that template functions can be used in *_PRED_FORMAT* without
// explicitly specifying their types.
TEST(PredicateFormatAssertionTest, AcceptsTemplateFunction)
{
    EXPECT_PRED_FORMAT1(IsNegativeFormat, -5);
    ASSERT_PRED_FORMAT2(EqualsFormat, 3, 3);
}

// Tests string assertions.

// Tests ASSERT_STREQ with non-NULL arguments.
TEST(StringAssertionTest, ASSERT_STREQ)
{
    const char *const p1 = "good";
    ASSERT_STREQ(p1, p1);

    // Let p2 have the same content as p1, but be at a different address.
    const char p2[] = "good";
    ASSERT_STREQ(p1, p2);

    EXPECT_FATAL_FAILURE(ASSERT_STREQ("bad", "good"),
                         "  \"bad\"\n  \"good\"");
}

// Tests ASSERT_STREQ with NULL arguments.
TEST(StringAssertionTest, ASSERT_STREQ_Null)
{
    ASSERT_STREQ(static_cast<const char *>(NULL), NULL);
    EXPECT_FATAL_FAILURE(ASSERT_STREQ(NULL, "non-null"),
                         "non-null");
}

// Tests ASSERT_STREQ with NULL arguments.
TEST(StringAssertionTest, ASSERT_STREQ_Null2)
{
    EXPECT_FATAL_FAILURE(ASSERT_STREQ("non-null", NULL),
                         "non-null");
}

// Tests ASSERT_STRNE.
TEST(StringAssertionTest, ASSERT_STRNE)
{
    ASSERT_STRNE("hi", "Hi");
    ASSERT_STRNE("Hi", NULL);
    ASSERT_STRNE(NULL, "Hi");
    ASSERT_STRNE("", NULL);
    ASSERT_STRNE(NULL, "");
    ASSERT_STRNE("", "Hi");
    ASSERT_STRNE("Hi", "");
    EXPECT_FATAL_FAILURE(ASSERT_STRNE("Hi", "Hi"),
                         "\"Hi\" vs \"Hi\"");
}

// Tests ASSERT_STRCASEEQ.
TEST(StringAssertionTest, ASSERT_STRCASEEQ)
{
    ASSERT_STRCASEEQ("hi", "Hi");
    ASSERT_STRCASEEQ(static_cast<const char *>(NULL), NULL);

    ASSERT_STRCASEEQ("", "");
    EXPECT_FATAL_FAILURE(ASSERT_STRCASEEQ("Hi", "hi2"),
                         "Ignoring case");
}

// Tests ASSERT_STRCASENE.
TEST(StringAssertionTest, ASSERT_STRCASENE)
{
    ASSERT_STRCASENE("hi1", "Hi2");
    ASSERT_STRCASENE("Hi", NULL);
    ASSERT_STRCASENE(NULL, "Hi");
    ASSERT_STRCASENE("", NULL);
    ASSERT_STRCASENE(NULL, "");
    ASSERT_STRCASENE("", "Hi");
    ASSERT_STRCASENE("Hi", "");
    EXPECT_FATAL_FAILURE(ASSERT_STRCASENE("Hi", "hi"),
                         "(ignoring case)");
}

// Tests *_STREQ on wide strings.
TEST(StringAssertionTest, STREQ_Wide)
{
    // NULL strings.
    ASSERT_STREQ(static_cast<const wchar_t *>(NULL), NULL);

    // Empty strings.
    ASSERT_STREQ(L"", L"");

    // Non-null vs NULL.
    EXPECT_NONFATAL_FAILURE(EXPECT_STREQ(L"non-null", NULL),
                            "non-null");

    // Equal strings.
    EXPECT_STREQ(L"Hi", L"Hi");

    // Unequal strings.
    EXPECT_NONFATAL_FAILURE(EXPECT_STREQ(L"abc", L"Abc"),
                            "Abc");

    // Strings containing wide characters.
    EXPECT_NONFATAL_FAILURE(EXPECT_STREQ(L"abc\x8119", L"abc\x8120"),
                            "abc");

    // The streaming variation.
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_STREQ(L"abc\x8119", L"abc\x8121") << "Expected failure";
    },
                            "Expected failure");
}

// Tests *_STRNE on wide strings.
TEST(StringAssertionTest, STRNE_Wide)
{
    // NULL strings.
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_STRNE(static_cast<const wchar_t *>(NULL), NULL);
    },
                            "");

    // Empty strings.
    EXPECT_NONFATAL_FAILURE(EXPECT_STRNE(L"", L""),
                            "L\"\"");

    // Non-null vs NULL.
    ASSERT_STRNE(L"non-null", NULL);

    // Equal strings.
    EXPECT_NONFATAL_FAILURE(EXPECT_STRNE(L"Hi", L"Hi"),
                            "L\"Hi\"");

    // Unequal strings.
    EXPECT_STRNE(L"abc", L"Abc");

    // Strings containing wide characters.
    EXPECT_NONFATAL_FAILURE(EXPECT_STRNE(L"abc\x8119", L"abc\x8119"),
                            "abc");

    // The streaming variation.
    ASSERT_STRNE(L"abc\x8119", L"abc\x8120") << "This shouldn't happen";
}

// Tests for ::testing::IsSubstring().

// Tests that IsSubstring() returns the correct result when the input
// argument type is const char*.
TEST(IsSubstringTest, ReturnsCorrectResultForCString)
{
    EXPECT_FALSE(IsSubstring("", "", NULL, "a"));
    EXPECT_FALSE(IsSubstring("", "", "b", NULL));
    EXPECT_FALSE(IsSubstring("", "", "needle", "haystack"));

    EXPECT_TRUE(IsSubstring("", "", static_cast<const char *>(NULL), NULL));
    EXPECT_TRUE(IsSubstring("", "", "needle", "two needles"));
}

// Tests that IsSubstring() returns the correct result when the input
// argument type is const wchar_t*.
TEST(IsSubstringTest, ReturnsCorrectResultForWideCString)
{
    EXPECT_FALSE(IsSubstring("", "", kNull, L"a"));
    EXPECT_FALSE(IsSubstring("", "", L"b", kNull));
    EXPECT_FALSE(IsSubstring("", "", L"needle", L"haystack"));

    EXPECT_TRUE(IsSubstring("", "", static_cast<const wchar_t *>(NULL), NULL));
    EXPECT_TRUE(IsSubstring("", "", L"needle", L"two needles"));
}

// Tests that IsSubstring() generates the correct message when the input
// argument type is const char*.
TEST(IsSubstringTest, GeneratesCorrectMessageForCString)
{
    EXPECT_STREQ("Value of: needle_expr\n"
                 "  Actual: \"needle\"\n"
                 "Expected: a substring of haystack_expr\n"
                 "Which is: \"haystack\"",
                 IsSubstring("needle_expr", "haystack_expr",
                             "needle", "haystack")
                     .failure_message());
}

// Tests that IsSubstring returns the correct result when the input
// argument type is ::std::string.
TEST(IsSubstringTest, ReturnsCorrectResultsForStdString)
{
    EXPECT_TRUE(IsSubstring("", "", std::string("hello"), "ahellob"));
    EXPECT_FALSE(IsSubstring("", "", "hello", std::string("world")));
}

#if GTEST_HAS_STD_WSTRING
// Tests that IsSubstring returns the correct result when the input
// argument type is ::std::wstring.
TEST(IsSubstringTest, ReturnsCorrectResultForStdWstring)
{
    EXPECT_TRUE(IsSubstring("", "", ::std::wstring(L"needle"), L"two needles"));
    EXPECT_FALSE(IsSubstring("", "", L"needle", ::std::wstring(L"haystack")));
}

// Tests that IsSubstring() generates the correct message when the input
// argument type is ::std::wstring.
TEST(IsSubstringTest, GeneratesCorrectMessageForWstring)
{
    EXPECT_STREQ("Value of: needle_expr\n"
                 "  Actual: L\"needle\"\n"
                 "Expected: a substring of haystack_expr\n"
                 "Which is: L\"haystack\"",
                 IsSubstring(
                     "needle_expr", "haystack_expr",
                     ::std::wstring(L"needle"), L"haystack")
                     .failure_message());
}

#endif // GTEST_HAS_STD_WSTRING

// Tests for ::testing::IsNotSubstring().

// Tests that IsNotSubstring() returns the correct result when the input
// argument type is const char*.
TEST(IsNotSubstringTest, ReturnsCorrectResultForCString)
{
    EXPECT_TRUE(IsNotSubstring("", "", "needle", "haystack"));
    EXPECT_FALSE(IsNotSubstring("", "", "needle", "two needles"));
}

// Tests that IsNotSubstring() returns the correct result when the input
// argument type is const wchar_t*.
TEST(IsNotSubstringTest, ReturnsCorrectResultForWideCString)
{
    EXPECT_TRUE(IsNotSubstring("", "", L"needle", L"haystack"));
    EXPECT_FALSE(IsNotSubstring("", "", L"needle", L"two needles"));
}

// Tests that IsNotSubstring() generates the correct message when the input
// argument type is const wchar_t*.
TEST(IsNotSubstringTest, GeneratesCorrectMessageForWideCString)
{
    EXPECT_STREQ("Value of: needle_expr\n"
                 "  Actual: L\"needle\"\n"
                 "Expected: not a substring of haystack_expr\n"
                 "Which is: L\"two needles\"",
                 IsNotSubstring(
                     "needle_expr", "haystack_expr",
                     L"needle", L"two needles")
                     .failure_message());
}

// Tests that IsNotSubstring returns the correct result when the input
// argument type is ::std::string.
TEST(IsNotSubstringTest, ReturnsCorrectResultsForStdString)
{
    EXPECT_FALSE(IsNotSubstring("", "", std::string("hello"), "ahellob"));
    EXPECT_TRUE(IsNotSubstring("", "", "hello", std::string("world")));
}

// Tests that IsNotSubstring() generates the correct message when the input
// argument type is ::std::string.
TEST(IsNotSubstringTest, GeneratesCorrectMessageForStdString)
{
    EXPECT_STREQ("Value of: needle_expr\n"
                 "  Actual: \"needle\"\n"
                 "Expected: not a substring of haystack_expr\n"
                 "Which is: \"two needles\"",
                 IsNotSubstring(
                     "needle_expr", "haystack_expr",
                     ::std::string("needle"), "two needles")
                     .failure_message());
}

#if GTEST_HAS_STD_WSTRING

// Tests that IsNotSubstring returns the correct result when the input
// argument type is ::std::wstring.
TEST(IsNotSubstringTest, ReturnsCorrectResultForStdWstring)
{
    EXPECT_FALSE(
        IsNotSubstring("", "", ::std::wstring(L"needle"), L"two needles"));
    EXPECT_TRUE(IsNotSubstring("", "", L"needle", ::std::wstring(L"haystack")));
}

#endif // GTEST_HAS_STD_WSTRING

// Tests floating-point assertions.

template<typename RawType>
class FloatingPointTest : public Test
{
protected:
    // Pre-calculated numbers to be used by the tests.
    struct TestValues {
        RawType close_to_positive_zero;
        RawType close_to_negative_zero;
        RawType further_from_negative_zero;

        RawType close_to_one;
        RawType further_from_one;

        RawType infinity;
        RawType close_to_infinity;
        RawType further_from_infinity;

        RawType nan1;
        RawType nan2;
    };

    typedef typename testing::internal::FloatingPoint<RawType> Floating;
    typedef typename Floating::Bits Bits;

    virtual void SetUp()
    {
        const size_t max_ulps = Floating::kMaxUlps;

        // The bits that represent 0.0.
        const Bits zero_bits = Floating(0).bits();

        // Makes some numbers close to 0.0.
        values_.close_to_positive_zero = Floating::ReinterpretBits(
            zero_bits + max_ulps / 2);
        values_.close_to_negative_zero = -Floating::ReinterpretBits(
            zero_bits + max_ulps - max_ulps / 2);
        values_.further_from_negative_zero = -Floating::ReinterpretBits(
            zero_bits + max_ulps + 1 - max_ulps / 2);

        // The bits that represent 1.0.
        const Bits one_bits = Floating(1).bits();

        // Makes some numbers close to 1.0.
        values_.close_to_one = Floating::ReinterpretBits(one_bits + max_ulps);
        values_.further_from_one = Floating::ReinterpretBits(
            one_bits + max_ulps + 1);

        // +infinity.
        values_.infinity = Floating::Infinity();

        // The bits that represent +infinity.
        const Bits infinity_bits = Floating(values_.infinity).bits();

        // Makes some numbers close to infinity.
        values_.close_to_infinity = Floating::ReinterpretBits(
            infinity_bits - max_ulps);
        values_.further_from_infinity = Floating::ReinterpretBits(
            infinity_bits - max_ulps - 1);

        // Makes some NAN's.  Sets the most significant bit of the fraction so that
        // our NaN's are quiet; trying to process a signaling NaN would raise an
        // exception if our environment enables floating point exceptions.
        values_.nan1 = Floating::ReinterpretBits(Floating::kExponentBitMask
                                                 | (static_cast<Bits>(1) << (Floating::kFractionBitCount - 1)) | 1);
        values_.nan2 = Floating::ReinterpretBits(Floating::kExponentBitMask
                                                 | (static_cast<Bits>(1) << (Floating::kFractionBitCount - 1)) | 200);
    }

    void TestSize()
    {
        EXPECT_EQ(sizeof(RawType), sizeof(Bits));
    }

    static TestValues values_;
};

template<typename RawType>
typename FloatingPointTest<RawType>::TestValues
    FloatingPointTest<RawType>::values_;

// Instantiates FloatingPointTest for testing *_FLOAT_EQ.
typedef FloatingPointTest<float> FloatTest;

// Tests that the size of Float::Bits matches the size of float.
TEST_F(FloatTest, Size)
{
    TestSize();
}

// Tests comparing with +0 and -0.
TEST_F(FloatTest, Zeros)
{
    EXPECT_FLOAT_EQ(0.0, -0.0);
    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(-0.0, 1.0),
                            "1.0");
    EXPECT_FATAL_FAILURE(ASSERT_FLOAT_EQ(0.0, 1.5),
                         "1.5");
}

// Tests comparing numbers close to 0.
//
// This ensures that *_FLOAT_EQ handles the sign correctly and no
// overflow occurs when comparing numbers whose absolute value is very
// small.
TEST_F(FloatTest, AlmostZeros)
{
    // In C++Builder, names within local classes (such as used by
    // EXPECT_FATAL_FAILURE) cannot be resolved against static members of the
    // scoping class.  Use a static local alias as a workaround.
    // We use the assignment syntax since some compilers, like Sun Studio,
    // don't allow initializing references using construction syntax
    // (parentheses).
    static const FloatTest::TestValues &v = this->values_;

    EXPECT_FLOAT_EQ(0.0, v.close_to_positive_zero);
    EXPECT_FLOAT_EQ(-0.0, v.close_to_negative_zero);
    EXPECT_FLOAT_EQ(v.close_to_positive_zero, v.close_to_negative_zero);

    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_FLOAT_EQ(v.close_to_positive_zero,
                        v.further_from_negative_zero);
    },
                         "v.further_from_negative_zero");
}

// Tests comparing numbers close to each other.
TEST_F(FloatTest, SmallDiff)
{
    EXPECT_FLOAT_EQ(1.0, values_.close_to_one);
    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(1.0, values_.further_from_one),
                            "values_.further_from_one");
}

// Tests comparing numbers far apart.
TEST_F(FloatTest, LargeDiff)
{
    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(2.5, 3.0),
                            "3.0");
}

// Tests comparing with infinity.
//
// This ensures that no overflow occurs when comparing numbers whose
// absolute value is very large.
TEST_F(FloatTest, Infinity)
{
    EXPECT_FLOAT_EQ(values_.infinity, values_.close_to_infinity);
    EXPECT_FLOAT_EQ(-values_.infinity, -values_.close_to_infinity);
#if !GTEST_OS_SYMBIAN
    // Nokia's STLport crashes if we try to output infinity or NaN.
    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(values_.infinity, -values_.infinity),
                            "-values_.infinity");

    // This is interesting as the representations of infinity and nan1
    // are only 1 DLP apart.
    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(values_.infinity, values_.nan1),
                            "values_.nan1");
#endif // !GTEST_OS_SYMBIAN
}

// Tests that comparing with NAN always returns false.
TEST_F(FloatTest, NaN)
{
#if !GTEST_OS_SYMBIAN
    // Nokia's STLport crashes if we try to output infinity or NaN.

    // In C++Builder, names within local classes (such as used by
    // EXPECT_FATAL_FAILURE) cannot be resolved against static members of the
    // scoping class.  Use a static local alias as a workaround.
    // We use the assignment syntax since some compilers, like Sun Studio,
    // don't allow initializing references using construction syntax
    // (parentheses).
    static const FloatTest::TestValues &v = this->values_;

    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(v.nan1, v.nan1),
                            "v.nan1");
    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(v.nan1, v.nan2),
                            "v.nan2");
    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(1.0, v.nan1),
                            "v.nan1");

    EXPECT_FATAL_FAILURE(ASSERT_FLOAT_EQ(v.nan1, v.infinity),
                         "v.infinity");
#endif // !GTEST_OS_SYMBIAN
}

// Tests that *_FLOAT_EQ are reflexive.
TEST_F(FloatTest, Reflexive)
{
    EXPECT_FLOAT_EQ(0.0, 0.0);
    EXPECT_FLOAT_EQ(1.0, 1.0);
    ASSERT_FLOAT_EQ(values_.infinity, values_.infinity);
}

// Tests that *_FLOAT_EQ are commutative.
TEST_F(FloatTest, Commutative)
{
    // We already tested EXPECT_FLOAT_EQ(1.0, values_.close_to_one).
    EXPECT_FLOAT_EQ(values_.close_to_one, 1.0);

    // We already tested EXPECT_FLOAT_EQ(1.0, values_.further_from_one).
    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(values_.further_from_one, 1.0),
                            "1.0");
}

// Tests EXPECT_NEAR.
TEST_F(FloatTest, EXPECT_NEAR)
{
    EXPECT_NEAR(-1.0f, -1.1f, 0.2f);
    EXPECT_NEAR(2.0f, 3.0f, 1.0f);
    EXPECT_NONFATAL_FAILURE(EXPECT_NEAR(1.0f, 1.5f, 0.25f), // NOLINT
                            "The difference between 1.0f and 1.5f is 0.5, "
                            "which exceeds 0.25f");
    // To work around a bug in gcc 2.95.0, there is intentionally no
    // space after the first comma in the previous line.
}

// Tests ASSERT_NEAR.
TEST_F(FloatTest, ASSERT_NEAR)
{
    ASSERT_NEAR(-1.0f, -1.1f, 0.2f);
    ASSERT_NEAR(2.0f, 3.0f, 1.0f);
    EXPECT_FATAL_FAILURE(ASSERT_NEAR(1.0f, 1.5f, 0.25f), // NOLINT
                         "The difference between 1.0f and 1.5f is 0.5, "
                         "which exceeds 0.25f");
    // To work around a bug in gcc 2.95.0, there is intentionally no
    // space after the first comma in the previous line.
}

// Tests the cases where FloatLE() should succeed.
TEST_F(FloatTest, FloatLESucceeds)
{
    EXPECT_PRED_FORMAT2(FloatLE, 1.0f, 2.0f); // When val1 < val2,
    ASSERT_PRED_FORMAT2(FloatLE, 1.0f, 1.0f); // val1 == val2,

    // or when val1 is greater than, but almost equals to, val2.
    EXPECT_PRED_FORMAT2(FloatLE, values_.close_to_positive_zero, 0.0f);
}

// Tests the cases where FloatLE() should fail.
TEST_F(FloatTest, FloatLEFails)
{
    // When val1 is greater than val2 by a large margin,
    EXPECT_NONFATAL_FAILURE(EXPECT_PRED_FORMAT2(FloatLE, 2.0f, 1.0f),
                            "(2.0f) <= (1.0f)");

    // or by a small yet non-negligible margin,
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED_FORMAT2(FloatLE, values_.further_from_one, 1.0f);
    },
                            "(values_.further_from_one) <= (1.0f)");

#if !GTEST_OS_SYMBIAN && !defined(__BORLANDC__)
    // Nokia's STLport crashes if we try to output infinity or NaN.
    // C++Builder gives bad results for ordered comparisons involving NaNs
    // due to compiler bugs.
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED_FORMAT2(FloatLE, values_.nan1, values_.infinity);
    },
                            "(values_.nan1) <= (values_.infinity)");
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED_FORMAT2(FloatLE, -values_.infinity, values_.nan1);
    },
                            "(-values_.infinity) <= (values_.nan1)");
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_PRED_FORMAT2(FloatLE, values_.nan1, values_.nan1);
    },
                         "(values_.nan1) <= (values_.nan1)");
#endif // !GTEST_OS_SYMBIAN && !defined(__BORLANDC__)
}

// Instantiates FloatingPointTest for testing *_DOUBLE_EQ.
typedef FloatingPointTest<double> DoubleTest;

// Tests that the size of Double::Bits matches the size of double.
TEST_F(DoubleTest, Size)
{
    TestSize();
}

// Tests comparing with +0 and -0.
TEST_F(DoubleTest, Zeros)
{
    EXPECT_DOUBLE_EQ(0.0, -0.0);
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(-0.0, 1.0),
                            "1.0");
    EXPECT_FATAL_FAILURE(ASSERT_DOUBLE_EQ(0.0, 1.0),
                         "1.0");
}

// Tests comparing numbers close to 0.
//
// This ensures that *_DOUBLE_EQ handles the sign correctly and no
// overflow occurs when comparing numbers whose absolute value is very
// small.
TEST_F(DoubleTest, AlmostZeros)
{
    // In C++Builder, names within local classes (such as used by
    // EXPECT_FATAL_FAILURE) cannot be resolved against static members of the
    // scoping class.  Use a static local alias as a workaround.
    // We use the assignment syntax since some compilers, like Sun Studio,
    // don't allow initializing references using construction syntax
    // (parentheses).
    static const DoubleTest::TestValues &v = this->values_;

    EXPECT_DOUBLE_EQ(0.0, v.close_to_positive_zero);
    EXPECT_DOUBLE_EQ(-0.0, v.close_to_negative_zero);
    EXPECT_DOUBLE_EQ(v.close_to_positive_zero, v.close_to_negative_zero);

    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_DOUBLE_EQ(v.close_to_positive_zero,
                         v.further_from_negative_zero);
    },
                         "v.further_from_negative_zero");
}

// Tests comparing numbers close to each other.
TEST_F(DoubleTest, SmallDiff)
{
    EXPECT_DOUBLE_EQ(1.0, values_.close_to_one);
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(1.0, values_.further_from_one),
                            "values_.further_from_one");
}

// Tests comparing numbers far apart.
TEST_F(DoubleTest, LargeDiff)
{
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(2.0, 3.0),
                            "3.0");
}

// Tests comparing with infinity.
//
// This ensures that no overflow occurs when comparing numbers whose
// absolute value is very large.
TEST_F(DoubleTest, Infinity)
{
    EXPECT_DOUBLE_EQ(values_.infinity, values_.close_to_infinity);
    EXPECT_DOUBLE_EQ(-values_.infinity, -values_.close_to_infinity);
#if !GTEST_OS_SYMBIAN
    // Nokia's STLport crashes if we try to output infinity or NaN.
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(values_.infinity, -values_.infinity),
                            "-values_.infinity");

    // This is interesting as the representations of infinity_ and nan1_
    // are only 1 DLP apart.
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(values_.infinity, values_.nan1),
                            "values_.nan1");
#endif // !GTEST_OS_SYMBIAN
}

// Tests that comparing with NAN always returns false.
TEST_F(DoubleTest, NaN)
{
#if !GTEST_OS_SYMBIAN
    // In C++Builder, names within local classes (such as used by
    // EXPECT_FATAL_FAILURE) cannot be resolved against static members of the
    // scoping class.  Use a static local alias as a workaround.
    // We use the assignment syntax since some compilers, like Sun Studio,
    // don't allow initializing references using construction syntax
    // (parentheses).
    static const DoubleTest::TestValues &v = this->values_;

    // Nokia's STLport crashes if we try to output infinity or NaN.
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(v.nan1, v.nan1),
                            "v.nan1");
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(v.nan1, v.nan2), "v.nan2");
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(1.0, v.nan1), "v.nan1");
    EXPECT_FATAL_FAILURE(ASSERT_DOUBLE_EQ(v.nan1, v.infinity),
                         "v.infinity");
#endif // !GTEST_OS_SYMBIAN
}

// Tests that *_DOUBLE_EQ are reflexive.
TEST_F(DoubleTest, Reflexive)
{
    EXPECT_DOUBLE_EQ(0.0, 0.0);
    EXPECT_DOUBLE_EQ(1.0, 1.0);
#if !GTEST_OS_SYMBIAN
    // Nokia's STLport crashes if we try to output infinity or NaN.
    ASSERT_DOUBLE_EQ(values_.infinity, values_.infinity);
#endif // !GTEST_OS_SYMBIAN
}

// Tests that *_DOUBLE_EQ are commutative.
TEST_F(DoubleTest, Commutative)
{
    // We already tested EXPECT_DOUBLE_EQ(1.0, values_.close_to_one).
    EXPECT_DOUBLE_EQ(values_.close_to_one, 1.0);

    // We already tested EXPECT_DOUBLE_EQ(1.0, values_.further_from_one).
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(values_.further_from_one, 1.0),
                            "1.0");
}

// Tests EXPECT_NEAR.
TEST_F(DoubleTest, EXPECT_NEAR)
{
    EXPECT_NEAR(-1.0, -1.1, 0.2);
    EXPECT_NEAR(2.0, 3.0, 1.0);
    EXPECT_NONFATAL_FAILURE(EXPECT_NEAR(1.0, 1.5, 0.25), // NOLINT
                            "The difference between 1.0 and 1.5 is 0.5, "
                            "which exceeds 0.25");
    // To work around a bug in gcc 2.95.0, there is intentionally no
    // space after the first comma in the previous statement.
}

// Tests ASSERT_NEAR.
TEST_F(DoubleTest, ASSERT_NEAR)
{
    ASSERT_NEAR(-1.0, -1.1, 0.2);
    ASSERT_NEAR(2.0, 3.0, 1.0);
    EXPECT_FATAL_FAILURE(ASSERT_NEAR(1.0, 1.5, 0.25), // NOLINT
                         "The difference between 1.0 and 1.5 is 0.5, "
                         "which exceeds 0.25");
    // To work around a bug in gcc 2.95.0, there is intentionally no
    // space after the first comma in the previous statement.
}

// Tests the cases where DoubleLE() should succeed.
TEST_F(DoubleTest, DoubleLESucceeds)
{
    EXPECT_PRED_FORMAT2(DoubleLE, 1.0, 2.0); // When val1 < val2,
    ASSERT_PRED_FORMAT2(DoubleLE, 1.0, 1.0); // val1 == val2,

    // or when val1 is greater than, but almost equals to, val2.
    EXPECT_PRED_FORMAT2(DoubleLE, values_.close_to_positive_zero, 0.0);
}

// Tests the cases where DoubleLE() should fail.
TEST_F(DoubleTest, DoubleLEFails)
{
    // When val1 is greater than val2 by a large margin,
    EXPECT_NONFATAL_FAILURE(EXPECT_PRED_FORMAT2(DoubleLE, 2.0, 1.0),
                            "(2.0) <= (1.0)");

    // or by a small yet non-negligible margin,
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED_FORMAT2(DoubleLE, values_.further_from_one, 1.0);
    },
                            "(values_.further_from_one) <= (1.0)");

#if !GTEST_OS_SYMBIAN && !defined(__BORLANDC__)
    // Nokia's STLport crashes if we try to output infinity or NaN.
    // C++Builder gives bad results for ordered comparisons involving NaNs
    // due to compiler bugs.
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED_FORMAT2(DoubleLE, values_.nan1, values_.infinity);
    },
                            "(values_.nan1) <= (values_.infinity)");
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_PRED_FORMAT2(DoubleLE, -values_.infinity, values_.nan1);
    },
                            " (-values_.infinity) <= (values_.nan1)");
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_PRED_FORMAT2(DoubleLE, values_.nan1, values_.nan1);
    },
                         "(values_.nan1) <= (values_.nan1)");
#endif // !GTEST_OS_SYMBIAN && !defined(__BORLANDC__)
}

// Verifies that a test or test case whose name starts with DISABLED_ is
// not run.

// A test whose name starts with DISABLED_.
// Should not run.
TEST(DisabledTest, DISABLED_TestShouldNotRun)
{
    FAIL() << "Unexpected failure: Disabled test should not be run.";
}

// A test whose name does not start with DISABLED_.
// Should run.
TEST(DisabledTest, NotDISABLED_TestShouldRun)
{
    EXPECT_EQ(1, 1);
}

// A test case whose name starts with DISABLED_.
// Should not run.
TEST(DISABLED_TestCase, TestShouldNotRun)
{
    FAIL() << "Unexpected failure: Test in disabled test case should not be run.";
}

// A test case and test whose names start with DISABLED_.
// Should not run.
TEST(DISABLED_TestCase, DISABLED_TestShouldNotRun)
{
    FAIL() << "Unexpected failure: Test in disabled test case should not be run.";
}

// Check that when all tests in a test case are disabled, SetUpTestCase() and
// TearDownTestCase() are not called.
class DisabledTestsTest : public Test
{
protected:
    static void SetUpTestCase()
    {
        FAIL() << "Unexpected failure: All tests disabled in test case. "
                  "SetUpTestCase() should not be called.";
    }

    static void TearDownTestCase()
    {
        FAIL() << "Unexpected failure: All tests disabled in test case. "
                  "TearDownTestCase() should not be called.";
    }
};

TEST_F(DisabledTestsTest, DISABLED_TestShouldNotRun_1)
{
    FAIL() << "Unexpected failure: Disabled test should not be run.";
}

TEST_F(DisabledTestsTest, DISABLED_TestShouldNotRun_2)
{
    FAIL() << "Unexpected failure: Disabled test should not be run.";
}

// Tests that disabled typed tests aren't run.

#if GTEST_HAS_TYPED_TEST

template<typename T>
class TypedTest : public Test
{
};

typedef testing::Types<int, double> NumericTypes;
TYPED_TEST_CASE(TypedTest, NumericTypes);

TYPED_TEST(TypedTest, DISABLED_ShouldNotRun)
{
    FAIL() << "Unexpected failure: Disabled typed test should not run.";
}

template<typename T>
class DISABLED_TypedTest : public Test
{
};

TYPED_TEST_CASE(DISABLED_TypedTest, NumericTypes);

TYPED_TEST(DISABLED_TypedTest, ShouldNotRun)
{
    FAIL() << "Unexpected failure: Disabled typed test should not run.";
}

#endif // GTEST_HAS_TYPED_TEST

// Tests that disabled type-parameterized tests aren't run.

#if GTEST_HAS_TYPED_TEST_P

template<typename T>
class TypedTestP : public Test
{
};

TYPED_TEST_CASE_P(TypedTestP);

TYPED_TEST_P(TypedTestP, DISABLED_ShouldNotRun)
{
    FAIL() << "Unexpected failure: "
           << "Disabled type-parameterized test should not run.";
}

REGISTER_TYPED_TEST_CASE_P(TypedTestP, DISABLED_ShouldNotRun);

INSTANTIATE_TYPED_TEST_CASE_P(My, TypedTestP, NumericTypes);

template<typename T>
class DISABLED_TypedTestP : public Test
{
};

TYPED_TEST_CASE_P(DISABLED_TypedTestP);

TYPED_TEST_P(DISABLED_TypedTestP, ShouldNotRun)
{
    FAIL() << "Unexpected failure: "
           << "Disabled type-parameterized test should not run.";
}

REGISTER_TYPED_TEST_CASE_P(DISABLED_TypedTestP, ShouldNotRun);

INSTANTIATE_TYPED_TEST_CASE_P(My, DISABLED_TypedTestP, NumericTypes);

#endif // GTEST_HAS_TYPED_TEST_P

// Tests that assertion macros evaluate their arguments exactly once.

class SingleEvaluationTest : public Test
{
public: // Must be public and not protected due to a bug in g++ 3.4.2.
    // This helper function is needed by the FailedASSERT_STREQ test
    // below.  It's public to work around C++Builder's bug with scoping local
    // classes.
    static void CompareAndIncrementCharPtrs()
    {
        ASSERT_STREQ(p1_++, p2_++);
    }

    // This helper function is needed by the FailedASSERT_NE test below.  It's
    // public to work around C++Builder's bug with scoping local classes.
    static void CompareAndIncrementInts()
    {
        ASSERT_NE(a_++, b_++);
    }

protected:
    SingleEvaluationTest()
    {
        p1_ = s1_;
        p2_ = s2_;
        a_ = 0;
        b_ = 0;
    }

    static const char *const s1_;
    static const char *const s2_;
    static const char *p1_;
    static const char *p2_;

    static int a_;
    static int b_;
};

const char *const SingleEvaluationTest::s1_ = "01234";
const char *const SingleEvaluationTest::s2_ = "abcde";
const char *SingleEvaluationTest::p1_;
const char *SingleEvaluationTest::p2_;
int SingleEvaluationTest::a_;
int SingleEvaluationTest::b_;

// Tests that when ASSERT_STREQ fails, it evaluates its arguments
// exactly once.
TEST_F(SingleEvaluationTest, FailedASSERT_STREQ)
{
    EXPECT_FATAL_FAILURE(SingleEvaluationTest::CompareAndIncrementCharPtrs(),
                         "p2_++");
    EXPECT_EQ(s1_ + 1, p1_);
    EXPECT_EQ(s2_ + 1, p2_);
}

// Tests that string assertion arguments are evaluated exactly once.
TEST_F(SingleEvaluationTest, ASSERT_STR)
{
    // successful EXPECT_STRNE
    EXPECT_STRNE(p1_++, p2_++);
    EXPECT_EQ(s1_ + 1, p1_);
    EXPECT_EQ(s2_ + 1, p2_);

    // failed EXPECT_STRCASEEQ
    EXPECT_NONFATAL_FAILURE(EXPECT_STRCASEEQ(p1_++, p2_++),
                            "Ignoring case");
    EXPECT_EQ(s1_ + 2, p1_);
    EXPECT_EQ(s2_ + 2, p2_);
}

// Tests that when ASSERT_NE fails, it evaluates its arguments exactly
// once.
TEST_F(SingleEvaluationTest, FailedASSERT_NE)
{
    EXPECT_FATAL_FAILURE(SingleEvaluationTest::CompareAndIncrementInts(),
                         "(a_++) != (b_++)");
    EXPECT_EQ(1, a_);
    EXPECT_EQ(1, b_);
}

// Tests that assertion arguments are evaluated exactly once.
TEST_F(SingleEvaluationTest, OtherCases)
{
    // successful EXPECT_TRUE
    EXPECT_TRUE(0 == a_++); // NOLINT
    EXPECT_EQ(1, a_);

    // failed EXPECT_TRUE
    EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(-1 == a_++), "-1 == a_++");
    EXPECT_EQ(2, a_);

    // successful EXPECT_GT
    EXPECT_GT(a_++, b_++);
    EXPECT_EQ(3, a_);
    EXPECT_EQ(1, b_);

    // failed EXPECT_LT
    EXPECT_NONFATAL_FAILURE(EXPECT_LT(a_++, b_++), "(a_++) < (b_++)");
    EXPECT_EQ(4, a_);
    EXPECT_EQ(2, b_);

    // successful ASSERT_TRUE
    ASSERT_TRUE(0 < a_++); // NOLINT
    EXPECT_EQ(5, a_);

    // successful ASSERT_GT
    ASSERT_GT(a_++, b_++);
    EXPECT_EQ(6, a_);
    EXPECT_EQ(3, b_);
}

#if GTEST_HAS_EXCEPTIONS

void ThrowAnInteger()
{
    throw 1;
}

// Tests that assertion arguments are evaluated exactly once.
TEST_F(SingleEvaluationTest, ExceptionTests)
{
    // successful EXPECT_THROW
    EXPECT_THROW({ // NOLINT
        a_++;
        ThrowAnInteger();
    },
                 int);
    EXPECT_EQ(1, a_);

    // failed EXPECT_THROW, throws different
    EXPECT_NONFATAL_FAILURE(EXPECT_THROW({ // NOLINT
                                a_++;
                                ThrowAnInteger();
                            },
                                         bool),
                            "throws a different type");
    EXPECT_EQ(2, a_);

    // failed EXPECT_THROW, throws nothing
    EXPECT_NONFATAL_FAILURE(EXPECT_THROW(a_++, bool), "throws nothing");
    EXPECT_EQ(3, a_);

    // successful EXPECT_NO_THROW
    EXPECT_NO_THROW(a_++);
    EXPECT_EQ(4, a_);

    // failed EXPECT_NO_THROW
    EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW({ // NOLINT
                                a_++;
                                ThrowAnInteger();
                            }),
                            "it throws");
    EXPECT_EQ(5, a_);

    // successful EXPECT_ANY_THROW
    EXPECT_ANY_THROW({ // NOLINT
        a_++;
        ThrowAnInteger();
    });
    EXPECT_EQ(6, a_);

    // failed EXPECT_ANY_THROW
    EXPECT_NONFATAL_FAILURE(EXPECT_ANY_THROW(a_++), "it doesn't");
    EXPECT_EQ(7, a_);
}

#endif // GTEST_HAS_EXCEPTIONS

// Tests {ASSERT|EXPECT}_NO_FATAL_FAILURE.
class NoFatalFailureTest : public Test
{
protected:
    void Succeeds() {}
    void FailsNonFatal()
    {
        ADD_FAILURE() << "some non-fatal failure";
    }
    void Fails()
    {
        FAIL() << "some fatal failure";
    }

    void DoAssertNoFatalFailureOnFails()
    {
        ASSERT_NO_FATAL_FAILURE(Fails());
        ADD_FAILURE() << "should not reach here.";
    }

    void DoExpectNoFatalFailureOnFails()
    {
        EXPECT_NO_FATAL_FAILURE(Fails());
        ADD_FAILURE() << "other failure";
    }
};

TEST_F(NoFatalFailureTest, NoFailure)
{
    EXPECT_NO_FATAL_FAILURE(Succeeds());
    ASSERT_NO_FATAL_FAILURE(Succeeds());
}

TEST_F(NoFatalFailureTest, NonFatalIsNoFailure)
{
    EXPECT_NONFATAL_FAILURE(
        EXPECT_NO_FATAL_FAILURE(FailsNonFatal()),
        "some non-fatal failure");
    EXPECT_NONFATAL_FAILURE(
        ASSERT_NO_FATAL_FAILURE(FailsNonFatal()),
        "some non-fatal failure");
}

TEST_F(NoFatalFailureTest, AssertNoFatalFailureOnFatalFailure)
{
    TestPartResultArray gtest_failures;
    {
        ScopedFakeTestPartResultReporter gtest_reporter(&gtest_failures);
        DoAssertNoFatalFailureOnFails();
    }
    ASSERT_EQ(2, gtest_failures.size());
    EXPECT_EQ(TestPartResult::kFatalFailure,
              gtest_failures.GetTestPartResult(0).type());
    EXPECT_EQ(TestPartResult::kFatalFailure,
              gtest_failures.GetTestPartResult(1).type());
    EXPECT_PRED_FORMAT2(testing::IsSubstring, "some fatal failure",
                        gtest_failures.GetTestPartResult(0).message());
    EXPECT_PRED_FORMAT2(testing::IsSubstring, "it does",
                        gtest_failures.GetTestPartResult(1).message());
}

TEST_F(NoFatalFailureTest, ExpectNoFatalFailureOnFatalFailure)
{
    TestPartResultArray gtest_failures;
    {
        ScopedFakeTestPartResultReporter gtest_reporter(&gtest_failures);
        DoExpectNoFatalFailureOnFails();
    }
    ASSERT_EQ(3, gtest_failures.size());
    EXPECT_EQ(TestPartResult::kFatalFailure,
              gtest_failures.GetTestPartResult(0).type());
    EXPECT_EQ(TestPartResult::kNonFatalFailure,
              gtest_failures.GetTestPartResult(1).type());
    EXPECT_EQ(TestPartResult::kNonFatalFailure,
              gtest_failures.GetTestPartResult(2).type());
    EXPECT_PRED_FORMAT2(testing::IsSubstring, "some fatal failure",
                        gtest_failures.GetTestPartResult(0).message());
    EXPECT_PRED_FORMAT2(testing::IsSubstring, "it does",
                        gtest_failures.GetTestPartResult(1).message());
    EXPECT_PRED_FORMAT2(testing::IsSubstring, "other failure",
                        gtest_failures.GetTestPartResult(2).message());
}

TEST_F(NoFatalFailureTest, MessageIsStreamable)
{
    TestPartResultArray gtest_failures;
    {
        ScopedFakeTestPartResultReporter gtest_reporter(&gtest_failures);
        EXPECT_NO_FATAL_FAILURE(FAIL() << "foo") << "my message";
    }
    ASSERT_EQ(2, gtest_failures.size());
    EXPECT_EQ(TestPartResult::kNonFatalFailure,
              gtest_failures.GetTestPartResult(0).type());
    EXPECT_EQ(TestPartResult::kNonFatalFailure,
              gtest_failures.GetTestPartResult(1).type());
    EXPECT_PRED_FORMAT2(testing::IsSubstring, "foo",
                        gtest_failures.GetTestPartResult(0).message());
    EXPECT_PRED_FORMAT2(testing::IsSubstring, "my message",
                        gtest_failures.GetTestPartResult(1).message());
}

// Tests non-string assertions.

std::string EditsToString(const std::vector<EditType> &edits)
{
    std::string out;
    for (size_t i = 0; i < edits.size(); ++i) {
        static const char kEdits[] = " +-/";
        out.append(1, kEdits[edits[i]]);
    }
    return out;
}

std::vector<size_t> CharsToIndices(const std::string &str)
{
    std::vector<size_t> out;
    for (size_t i = 0; i < str.size(); ++i) {
        out.push_back(str[i]);
    }
    return out;
}

std::vector<std::string> CharsToLines(const std::string &str)
{
    std::vector<std::string> out;
    for (size_t i = 0; i < str.size(); ++i) {
        out.push_back(str.substr(i, 1));
    }
    return out;
}

TEST(EditDistance, TestCases)
{
    struct Case {
        int line;
        const char *left;
        const char *right;
        const char *expected_edits;
        const char *expected_diff;
    };
    static const Case kCases[] = {
        // No change.
        {__LINE__, "A", "A", " ", ""},
        {__LINE__, "ABCDE", "ABCDE", "     ", ""},
        // Simple adds.
        {__LINE__, "X", "XA", " +", "@@ +1,2 @@\n X\n+A\n"},
        {__LINE__, "X", "XABCD", " ++++", "@@ +1,5 @@\n X\n+A\n+B\n+C\n+D\n"},
        // Simple removes.
        {__LINE__, "XA", "X", " -", "@@ -1,2 @@\n X\n-A\n"},
        {__LINE__, "XABCD", "X", " ----", "@@ -1,5 @@\n X\n-A\n-B\n-C\n-D\n"},
        // Simple replaces.
        {__LINE__, "A", "a", "/", "@@ -1,1 +1,1 @@\n-A\n+a\n"},
        {__LINE__, "ABCD", "abcd", "////",
         "@@ -1,4 +1,4 @@\n-A\n-B\n-C\n-D\n+a\n+b\n+c\n+d\n"},
        // Path finding.
        {__LINE__, "ABCDEFGH", "ABXEGH1", "  -/ -  +",
         "@@ -1,8 +1,7 @@\n A\n B\n-C\n-D\n+X\n E\n-F\n G\n H\n+1\n"},
        {__LINE__, "AAAABCCCC", "ABABCDCDC", "- /   + / ",
         "@@ -1,9 +1,9 @@\n-A\n A\n-A\n+B\n A\n B\n C\n+D\n C\n-C\n+D\n C\n"},
        {__LINE__, "ABCDE", "BCDCD", "-   +/",
         "@@ -1,5 +1,5 @@\n-A\n B\n C\n D\n-E\n+C\n+D\n"},
        {__LINE__, "ABCDEFGHIJKL", "BCDCDEFGJKLJK", "- ++     --   ++",
         "@@ -1,4 +1,5 @@\n-A\n B\n+C\n+D\n C\n D\n"
         "@@ -6,7 +7,7 @@\n F\n G\n-H\n-I\n J\n K\n L\n+J\n+K\n"},
        {}};
    for (const Case *c = kCases; c->left; ++c) {
        EXPECT_TRUE(c->expected_edits == EditsToString(CalculateOptimalEdits(CharsToIndices(c->left), CharsToIndices(c->right))))
            << "Left <" << c->left << "> Right <" << c->right << "> Edits <"
            << EditsToString(CalculateOptimalEdits(
                   CharsToIndices(c->left), CharsToIndices(c->right)))
            << ">";
        EXPECT_TRUE(c->expected_diff == CreateUnifiedDiff(CharsToLines(c->left), CharsToLines(c->right)))
            << "Left <" << c->left << "> Right <" << c->right << "> Diff <"
            << CreateUnifiedDiff(CharsToLines(c->left), CharsToLines(c->right))
            << ">";
    }
}

// Tests EqFailure(), used for implementing *EQ* assertions.
TEST(AssertionTest, EqFailure)
{
    const std::string foo_val("5"), bar_val("6");
    const std::string msg1(
        EqFailure("foo", "bar", foo_val, bar_val, false)
            .failure_message());
    EXPECT_STREQ(
        "Expected equality of these values:\n"
        "  foo\n"
        "    Which is: 5\n"
        "  bar\n"
        "    Which is: 6",
        msg1.c_str());

    const std::string msg2(
        EqFailure("foo", "6", foo_val, bar_val, false)
            .failure_message());
    EXPECT_STREQ(
        "Expected equality of these values:\n"
        "  foo\n"
        "    Which is: 5\n"
        "  6",
        msg2.c_str());

    const std::string msg3(
        EqFailure("5", "bar", foo_val, bar_val, false)
            .failure_message());
    EXPECT_STREQ(
        "Expected equality of these values:\n"
        "  5\n"
        "  bar\n"
        "    Which is: 6",
        msg3.c_str());

    const std::string msg4(
        EqFailure("5", "6", foo_val, bar_val, false).failure_message());
    EXPECT_STREQ(
        "Expected equality of these values:\n"
        "  5\n"
        "  6",
        msg4.c_str());

    const std::string msg5(
        EqFailure("foo", "bar",
                  std::string("\"x\""), std::string("\"y\""),
                  true)
            .failure_message());
    EXPECT_STREQ(
        "Expected equality of these values:\n"
        "  foo\n"
        "    Which is: \"x\"\n"
        "  bar\n"
        "    Which is: \"y\"\n"
        "Ignoring case",
        msg5.c_str());
}

TEST(AssertionTest, EqFailureWithDiff)
{
    const std::string left(
        "1\\n2XXX\\n3\\n5\\n6\\n7\\n8\\n9\\n10\\n11\\n12XXX\\n13\\n14\\n15");
    const std::string right(
        "1\\n2\\n3\\n4\\n5\\n6\\n7\\n8\\n9\\n11\\n12\\n13\\n14");
    const std::string msg1(
        EqFailure("left", "right", left, right, false).failure_message());
    EXPECT_STREQ(
        "Expected equality of these values:\n"
        "  left\n"
        "    Which is: "
        "1\\n2XXX\\n3\\n5\\n6\\n7\\n8\\n9\\n10\\n11\\n12XXX\\n13\\n14\\n15\n"
        "  right\n"
        "    Which is: 1\\n2\\n3\\n4\\n5\\n6\\n7\\n8\\n9\\n11\\n12\\n13\\n14\n"
        "With diff:\n@@ -1,5 +1,6 @@\n 1\n-2XXX\n+2\n 3\n+4\n 5\n 6\n"
        "@@ -7,8 +8,6 @@\n 8\n 9\n-10\n 11\n-12XXX\n+12\n 13\n 14\n-15\n",
        msg1.c_str());
}

// Tests AppendUserMessage(), used for implementing the *EQ* macros.
TEST(AssertionTest, AppendUserMessage)
{
    const std::string foo("foo");

    Message msg;
    EXPECT_STREQ("foo",
                 AppendUserMessage(foo, msg).c_str());

    msg << "bar";
    EXPECT_STREQ("foo\nbar",
                 AppendUserMessage(foo, msg).c_str());
}

#ifdef __BORLANDC__
// Silences warnings: "Condition is always true", "Unreachable code"
#pragma option push -w-ccc -w-rch
#endif

// Tests ASSERT_TRUE.
TEST(AssertionTest, ASSERT_TRUE)
{
    ASSERT_TRUE(2 > 1); // NOLINT
    EXPECT_FATAL_FAILURE(ASSERT_TRUE(2 < 1),
                         "2 < 1");
}

// Tests ASSERT_TRUE(predicate) for predicates returning AssertionResult.
TEST(AssertionTest, AssertTrueWithAssertionResult)
{
    ASSERT_TRUE(ResultIsEven(2));
#ifndef __BORLANDC__
    // ICE's in C++Builder.
    EXPECT_FATAL_FAILURE(ASSERT_TRUE(ResultIsEven(3)),
                         "Value of: ResultIsEven(3)\n"
                         "  Actual: false (3 is odd)\n"
                         "Expected: true");
#endif
    ASSERT_TRUE(ResultIsEvenNoExplanation(2));
    EXPECT_FATAL_FAILURE(ASSERT_TRUE(ResultIsEvenNoExplanation(3)),
                         "Value of: ResultIsEvenNoExplanation(3)\n"
                         "  Actual: false (3 is odd)\n"
                         "Expected: true");
}

// Tests ASSERT_FALSE.
TEST(AssertionTest, ASSERT_FALSE)
{
    ASSERT_FALSE(2 < 1); // NOLINT
    EXPECT_FATAL_FAILURE(ASSERT_FALSE(2 > 1),
                         "Value of: 2 > 1\n"
                         "  Actual: true\n"
                         "Expected: false");
}

// Tests ASSERT_FALSE(predicate) for predicates returning AssertionResult.
TEST(AssertionTest, AssertFalseWithAssertionResult)
{
    ASSERT_FALSE(ResultIsEven(3));
#ifndef __BORLANDC__
    // ICE's in C++Builder.
    EXPECT_FATAL_FAILURE(ASSERT_FALSE(ResultIsEven(2)),
                         "Value of: ResultIsEven(2)\n"
                         "  Actual: true (2 is even)\n"
                         "Expected: false");
#endif
    ASSERT_FALSE(ResultIsEvenNoExplanation(3));
    EXPECT_FATAL_FAILURE(ASSERT_FALSE(ResultIsEvenNoExplanation(2)),
                         "Value of: ResultIsEvenNoExplanation(2)\n"
                         "  Actual: true\n"
                         "Expected: false");
}

#ifdef __BORLANDC__
// Restores warnings after previous "#pragma option push" suppressed them
#pragma option pop
#endif

// Tests using ASSERT_EQ on double values.  The purpose is to make
// sure that the specialization we did for integer and anonymous enums
// isn't used for double arguments.
TEST(ExpectTest, ASSERT_EQ_Double)
{
    // A success.
    ASSERT_EQ(5.6, 5.6);

    // A failure.
    EXPECT_FATAL_FAILURE(ASSERT_EQ(5.1, 5.2),
                         "5.1");
}

// Tests ASSERT_EQ.
TEST(AssertionTest, ASSERT_EQ)
{
    ASSERT_EQ(5, 2 + 3);
    EXPECT_FATAL_FAILURE(ASSERT_EQ(5, 2 * 3),
                         "Expected equality of these values:\n"
                         "  5\n"
                         "  2*3\n"
                         "    Which is: 6");
}

// Tests ASSERT_EQ(NULL, pointer).
#if GTEST_CAN_COMPARE_NULL
TEST(AssertionTest, ASSERT_EQ_NULL)
{
    // A success.
    const char *p = NULL;
    // Some older GCC versions may issue a spurious warning in this or the next
    // assertion statement. This warning should not be suppressed with
    // static_cast since the test verifies the ability to use bare NULL as the
    // expected parameter to the macro.
    ASSERT_EQ(NULL, p);

    // A failure.
    static int n = 0;
    EXPECT_FATAL_FAILURE(ASSERT_EQ(NULL, &n),
                         "  &n\n    Which is:");
}
#endif // GTEST_CAN_COMPARE_NULL

// Tests ASSERT_EQ(0, non_pointer).  Since the literal 0 can be
// treated as a null pointer by the compiler, we need to make sure
// that ASSERT_EQ(0, non_pointer) isn't interpreted by Google Test as
// ASSERT_EQ(static_cast<void*>(NULL), non_pointer).
TEST(ExpectTest, ASSERT_EQ_0)
{
    int n = 0;

    // A success.
    ASSERT_EQ(0, n);

    // A failure.
    EXPECT_FATAL_FAILURE(ASSERT_EQ(0, 5.6),
                         "  0\n  5.6");
}

// Tests ASSERT_NE.
TEST(AssertionTest, ASSERT_NE)
{
    ASSERT_NE(6, 7);
    EXPECT_FATAL_FAILURE(ASSERT_NE('a', 'a'),
                         "Expected: ('a') != ('a'), "
                         "actual: 'a' (97, 0x61) vs 'a' (97, 0x61)");
}

// Tests ASSERT_LE.
TEST(AssertionTest, ASSERT_LE)
{
    ASSERT_LE(2, 3);
    ASSERT_LE(2, 2);
    EXPECT_FATAL_FAILURE(ASSERT_LE(2, 0),
                         "Expected: (2) <= (0), actual: 2 vs 0");
}

// Tests ASSERT_LT.
TEST(AssertionTest, ASSERT_LT)
{
    ASSERT_LT(2, 3);
    EXPECT_FATAL_FAILURE(ASSERT_LT(2, 2),
                         "Expected: (2) < (2), actual: 2 vs 2");
}

// Tests ASSERT_GE.
TEST(AssertionTest, ASSERT_GE)
{
    ASSERT_GE(2, 1);
    ASSERT_GE(2, 2);
    EXPECT_FATAL_FAILURE(ASSERT_GE(2, 3),
                         "Expected: (2) >= (3), actual: 2 vs 3");
}

// Tests ASSERT_GT.
TEST(AssertionTest, ASSERT_GT)
{
    ASSERT_GT(2, 1);
    EXPECT_FATAL_FAILURE(ASSERT_GT(2, 2),
                         "Expected: (2) > (2), actual: 2 vs 2");
}

#if GTEST_HAS_EXCEPTIONS

void ThrowNothing()
{
}

// Tests ASSERT_THROW.
TEST(AssertionTest, ASSERT_THROW)
{
    ASSERT_THROW(ThrowAnInteger(), int);

#ifndef __BORLANDC__

    // ICE's in C++Builder 2007 and 2009.
    EXPECT_FATAL_FAILURE(
        ASSERT_THROW(ThrowAnInteger(), bool),
        "Expected: ThrowAnInteger() throws an exception of type bool.\n"
        "  Actual: it throws a different type.");
#endif

    EXPECT_FATAL_FAILURE(
        ASSERT_THROW(ThrowNothing(), bool),
        "Expected: ThrowNothing() throws an exception of type bool.\n"
        "  Actual: it throws nothing.");
}

// Tests ASSERT_NO_THROW.
TEST(AssertionTest, ASSERT_NO_THROW)
{
    ASSERT_NO_THROW(ThrowNothing());
    EXPECT_FATAL_FAILURE(ASSERT_NO_THROW(ThrowAnInteger()),
                         "Expected: ThrowAnInteger() doesn't throw an exception."
                         "\n  Actual: it throws.");
}

// Tests ASSERT_ANY_THROW.
TEST(AssertionTest, ASSERT_ANY_THROW)
{
    ASSERT_ANY_THROW(ThrowAnInteger());
    EXPECT_FATAL_FAILURE(
        ASSERT_ANY_THROW(ThrowNothing()),
        "Expected: ThrowNothing() throws an exception.\n"
        "  Actual: it doesn't.");
}

#endif // GTEST_HAS_EXCEPTIONS

// Makes sure we deal with the precedence of <<.  This test should
// compile.
TEST(AssertionTest, AssertPrecedence)
{
    ASSERT_EQ(1 < 2, true);
    bool false_value = false;
    ASSERT_EQ(true && false_value, false);
}

// A subroutine used by the following test.
void TestEq1(int x)
{
    ASSERT_EQ(1, x);
}

// Tests calling a test subroutine that's not part of a fixture.
TEST(AssertionTest, NonFixtureSubroutine)
{
    EXPECT_FATAL_FAILURE(TestEq1(2),
                         "  x\n    Which is: 2");
}

// An uncopyable class.
class Uncopyable
{
public:
    explicit Uncopyable(int a_value)
        : value_(a_value)
    {
    }

    int value() const { return value_; }
    bool operator==(const Uncopyable &rhs) const
    {
        return value() == rhs.value();
    }

private:
    // This constructor deliberately has no implementation, as we don't
    // want this class to be copyable.
    Uncopyable(const Uncopyable &); // NOLINT

    int value_;
};

::std::ostream &operator<<(::std::ostream &os, const Uncopyable &value)
{
    return os << value.value();
}

bool IsPositiveUncopyable(const Uncopyable &x)
{
    return x.value() > 0;
}

// A subroutine used by the following test.
void TestAssertNonPositive()
{
    Uncopyable y(-1);
    ASSERT_PRED1(IsPositiveUncopyable, y);
}
// A subroutine used by the following test.
void TestAssertEqualsUncopyable()
{
    Uncopyable x(5);
    Uncopyable y(-1);
    ASSERT_EQ(x, y);
}

// Tests that uncopyable objects can be used in assertions.
TEST(AssertionTest, AssertWorksWithUncopyableObject)
{
    Uncopyable x(5);
    ASSERT_PRED1(IsPositiveUncopyable, x);
    ASSERT_EQ(x, x);
    EXPECT_FATAL_FAILURE(TestAssertNonPositive(),
                         "IsPositiveUncopyable(y) evaluates to false, where\ny evaluates to -1");
    EXPECT_FATAL_FAILURE(TestAssertEqualsUncopyable(),
                         "Expected equality of these values:\n"
                         "  x\n    Which is: 5\n  y\n    Which is: -1");
}

// Tests that uncopyable objects can be used in expects.
TEST(AssertionTest, ExpectWorksWithUncopyableObject)
{
    Uncopyable x(5);
    EXPECT_PRED1(IsPositiveUncopyable, x);
    Uncopyable y(-1);
    EXPECT_NONFATAL_FAILURE(EXPECT_PRED1(IsPositiveUncopyable, y),
                            "IsPositiveUncopyable(y) evaluates to false, where\ny evaluates to -1");
    EXPECT_EQ(x, x);
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(x, y),
                            "Expected equality of these values:\n"
                            "  x\n    Which is: 5\n  y\n    Which is: -1");
}

enum NamedEnum {
    kE1 = 0,
    kE2 = 1
};

TEST(AssertionTest, NamedEnum)
{
    EXPECT_EQ(kE1, kE1);
    EXPECT_LT(kE1, kE2);
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(kE1, kE2), "Which is: 0");
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(kE1, kE2), "Which is: 1");
}

// The version of gcc used in XCode 2.2 has a bug and doesn't allow
// anonymous enums in assertions.  Therefore the following test is not
// done on Mac.
// Sun Studio and HP aCC also reject this code.
#if !GTEST_OS_MAC && !defined(__SUNPRO_CC) && !defined(__HP_aCC)

// Tests using assertions with anonymous enums.
enum {
    kCaseA = -1,

#if GTEST_OS_LINUX

    // We want to test the case where the size of the anonymous enum is
    // larger than sizeof(int), to make sure our implementation of the
    // assertions doesn't truncate the enums.  However, MSVC
    // (incorrectly) doesn't allow an enum value to exceed the range of
    // an int, so this has to be conditionally compiled.
    //
    // On Linux, kCaseB and kCaseA have the same value when truncated to
    // int size.  We want to test whether this will confuse the
    // assertions.
    kCaseB = testing::internal::kMaxBiggestInt,

#else

    kCaseB = INT_MAX,

#endif // GTEST_OS_LINUX

    kCaseC = 42
};

TEST(AssertionTest, AnonymousEnum)
{
#if GTEST_OS_LINUX

    EXPECT_EQ(static_cast<int>(kCaseA), static_cast<int>(kCaseB));

#endif // GTEST_OS_LINUX

    EXPECT_EQ(kCaseA, kCaseA);
    EXPECT_NE(kCaseA, kCaseB);
    EXPECT_LT(kCaseA, kCaseB);
    EXPECT_LE(kCaseA, kCaseB);
    EXPECT_GT(kCaseB, kCaseA);
    EXPECT_GE(kCaseA, kCaseA);
    EXPECT_NONFATAL_FAILURE(EXPECT_GE(kCaseA, kCaseB),
                            "(kCaseA) >= (kCaseB)");
    EXPECT_NONFATAL_FAILURE(EXPECT_GE(kCaseA, kCaseC),
                            "-1 vs 42");

    ASSERT_EQ(kCaseA, kCaseA);
    ASSERT_NE(kCaseA, kCaseB);
    ASSERT_LT(kCaseA, kCaseB);
    ASSERT_LE(kCaseA, kCaseB);
    ASSERT_GT(kCaseB, kCaseA);
    ASSERT_GE(kCaseA, kCaseA);

#ifndef __BORLANDC__

    // ICE's in C++Builder.
    EXPECT_FATAL_FAILURE(ASSERT_EQ(kCaseA, kCaseB),
                         "  kCaseB\n    Which is: ");
    EXPECT_FATAL_FAILURE(ASSERT_EQ(kCaseA, kCaseC),
                         "\n    Which is: 42");
#endif

    EXPECT_FATAL_FAILURE(ASSERT_EQ(kCaseA, kCaseC),
                         "\n    Which is: -1");
}

#endif // !GTEST_OS_MAC && !defined(__SUNPRO_CC)

#if GTEST_OS_WINDOWS

static HRESULT UnexpectedHRESULTFailure()
{
    return E_UNEXPECTED;
}

static HRESULT OkHRESULTSuccess()
{
    return S_OK;
}

static HRESULT FalseHRESULTSuccess()
{
    return S_FALSE;
}

// HRESULT assertion tests test both zero and non-zero
// success codes as well as failure message for each.
//
// Windows CE doesn't support message texts.
TEST(HRESULTAssertionTest, EXPECT_HRESULT_SUCCEEDED)
{
    EXPECT_HRESULT_SUCCEEDED(S_OK);
    EXPECT_HRESULT_SUCCEEDED(S_FALSE);

    EXPECT_NONFATAL_FAILURE(EXPECT_HRESULT_SUCCEEDED(UnexpectedHRESULTFailure()),
                            "Expected: (UnexpectedHRESULTFailure()) succeeds.\n"
                            "  Actual: 0x8000FFFF");
}

TEST(HRESULTAssertionTest, ASSERT_HRESULT_SUCCEEDED)
{
    ASSERT_HRESULT_SUCCEEDED(S_OK);
    ASSERT_HRESULT_SUCCEEDED(S_FALSE);

    EXPECT_FATAL_FAILURE(ASSERT_HRESULT_SUCCEEDED(UnexpectedHRESULTFailure()),
                         "Expected: (UnexpectedHRESULTFailure()) succeeds.\n"
                         "  Actual: 0x8000FFFF");
}

TEST(HRESULTAssertionTest, EXPECT_HRESULT_FAILED)
{
    EXPECT_HRESULT_FAILED(E_UNEXPECTED);

    EXPECT_NONFATAL_FAILURE(EXPECT_HRESULT_FAILED(OkHRESULTSuccess()),
                            "Expected: (OkHRESULTSuccess()) fails.\n"
                            "  Actual: 0x0");
    EXPECT_NONFATAL_FAILURE(EXPECT_HRESULT_FAILED(FalseHRESULTSuccess()),
                            "Expected: (FalseHRESULTSuccess()) fails.\n"
                            "  Actual: 0x1");
}

TEST(HRESULTAssertionTest, ASSERT_HRESULT_FAILED)
{
    ASSERT_HRESULT_FAILED(E_UNEXPECTED);

#ifndef __BORLANDC__

    // ICE's in C++Builder 2007 and 2009.
    EXPECT_FATAL_FAILURE(ASSERT_HRESULT_FAILED(OkHRESULTSuccess()),
                         "Expected: (OkHRESULTSuccess()) fails.\n"
                         "  Actual: 0x0");
#endif

    EXPECT_FATAL_FAILURE(ASSERT_HRESULT_FAILED(FalseHRESULTSuccess()),
                         "Expected: (FalseHRESULTSuccess()) fails.\n"
                         "  Actual: 0x1");
}

// Tests that streaming to the HRESULT macros works.
TEST(HRESULTAssertionTest, Streaming)
{
    EXPECT_HRESULT_SUCCEEDED(S_OK) << "unexpected failure";
    ASSERT_HRESULT_SUCCEEDED(S_OK) << "unexpected failure";
    EXPECT_HRESULT_FAILED(E_UNEXPECTED) << "unexpected failure";
    ASSERT_HRESULT_FAILED(E_UNEXPECTED) << "unexpected failure";

    EXPECT_NONFATAL_FAILURE(
        EXPECT_HRESULT_SUCCEEDED(E_UNEXPECTED) << "expected failure",
        "expected failure");

#ifndef __BORLANDC__

    // ICE's in C++Builder 2007 and 2009.
    EXPECT_FATAL_FAILURE(
        ASSERT_HRESULT_SUCCEEDED(E_UNEXPECTED) << "expected failure",
        "expected failure");
#endif

    EXPECT_NONFATAL_FAILURE(
        EXPECT_HRESULT_FAILED(S_OK) << "expected failure",
        "expected failure");

    EXPECT_FATAL_FAILURE(
        ASSERT_HRESULT_FAILED(S_OK) << "expected failure",
        "expected failure");
}

#endif // GTEST_OS_WINDOWS

#ifdef __BORLANDC__
// Silences warnings: "Condition is always true", "Unreachable code"
#pragma option push -w-ccc -w-rch
#endif

// Tests that the assertion macros behave like single statements.
TEST(AssertionSyntaxTest, BasicAssertionsBehavesLikeSingleStatement)
{
    if (AlwaysFalse())
        ASSERT_TRUE(false) << "This should never be executed; "
                              "It's a compilation test only.";

    if (AlwaysTrue())
        EXPECT_FALSE(false);
    else
        ; // NOLINT

    if (AlwaysFalse())
        ASSERT_LT(1, 3);

    if (AlwaysFalse())
        ; // NOLINT
    else
        EXPECT_GT(3, 2) << "";
}

#if GTEST_HAS_EXCEPTIONS
// Tests that the compiler will not complain about unreachable code in the
// EXPECT_THROW/EXPECT_ANY_THROW/EXPECT_NO_THROW macros.
TEST(ExpectThrowTest, DoesNotGenerateUnreachableCodeWarning)
{
    int n = 0;

    EXPECT_THROW(throw 1, int);
    EXPECT_NONFATAL_FAILURE(EXPECT_THROW(n++, int), "");
    EXPECT_NONFATAL_FAILURE(EXPECT_THROW(throw 1, const char *), "");
    EXPECT_NO_THROW(n++);
    EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(throw 1), "");
    EXPECT_ANY_THROW(throw 1);
    EXPECT_NONFATAL_FAILURE(EXPECT_ANY_THROW(n++), "");
}

TEST(AssertionSyntaxTest, ExceptionAssertionsBehavesLikeSingleStatement)
{
    if (AlwaysFalse())
        EXPECT_THROW(ThrowNothing(), bool);

    if (AlwaysTrue())
        EXPECT_THROW(ThrowAnInteger(), int);
    else
        ; // NOLINT

    if (AlwaysFalse())
        EXPECT_NO_THROW(ThrowAnInteger());

    if (AlwaysTrue())
        EXPECT_NO_THROW(ThrowNothing());
    else
        ; // NOLINT

    if (AlwaysFalse())
        EXPECT_ANY_THROW(ThrowNothing());

    if (AlwaysTrue())
        EXPECT_ANY_THROW(ThrowAnInteger());
    else
        ; // NOLINT
}
#endif // GTEST_HAS_EXCEPTIONS

TEST(AssertionSyntaxTest, NoFatalFailureAssertionsBehavesLikeSingleStatement)
{
    if (AlwaysFalse())
        EXPECT_NO_FATAL_FAILURE(FAIL()) << "This should never be executed. "
                                        << "It's a compilation test only.";
    else
        ; // NOLINT

    if (AlwaysFalse())
        ASSERT_NO_FATAL_FAILURE(FAIL()) << "";
    else
        ; // NOLINT

    if (AlwaysTrue())
        EXPECT_NO_FATAL_FAILURE(SUCCEED());
    else
        ; // NOLINT

    if (AlwaysFalse())
        ; // NOLINT
    else
        ASSERT_NO_FATAL_FAILURE(SUCCEED());
}

// Tests that the assertion macros work well with switch statements.
TEST(AssertionSyntaxTest, WorksWithSwitch)
{
    switch (0) {
    case 1:
        break;
    default:
        ASSERT_TRUE(true);
    }

    switch (0)
    case 0:
        EXPECT_FALSE(false) << "EXPECT_FALSE failed in switch case";

    // Binary assertions are implemented using a different code path
    // than the Boolean assertions.  Hence we test them separately.
    switch (0) {
    case 1:
    default:
        ASSERT_EQ(1, 1) << "ASSERT_EQ failed in default switch handler";
    }

    switch (0)
    case 0:
        EXPECT_NE(1, 2);
}

#if GTEST_HAS_EXCEPTIONS

void ThrowAString()
{
    throw "std::string";
}

// Test that the exception assertion macros compile and work with const
// type qualifier.
TEST(AssertionSyntaxTest, WorksWithConst)
{
    ASSERT_THROW(ThrowAString(), const char *);

    EXPECT_THROW(ThrowAString(), const char *);
}

#endif // GTEST_HAS_EXCEPTIONS

} // namespace

namespace testing {

// Tests that Google Test tracks SUCCEED*.
TEST(SuccessfulAssertionTest, SUCCEED)
{
    SUCCEED();
    SUCCEED() << "OK";
    EXPECT_EQ(2, GetUnitTestImpl()->current_test_result()->total_part_count());
}

// Tests that Google Test doesn't track successful EXPECT_*.
TEST(SuccessfulAssertionTest, EXPECT)
{
    EXPECT_TRUE(true);
    EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
}

// Tests that Google Test doesn't track successful EXPECT_STR*.
TEST(SuccessfulAssertionTest, EXPECT_STR)
{
    EXPECT_STREQ("", "");
    EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
}

// Tests that Google Test doesn't track successful ASSERT_*.
TEST(SuccessfulAssertionTest, ASSERT)
{
    ASSERT_TRUE(true);
    EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
}

// Tests that Google Test doesn't track successful ASSERT_STR*.
TEST(SuccessfulAssertionTest, ASSERT_STR)
{
    ASSERT_STREQ("", "");
    EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
}

} // namespace testing

namespace {

// Tests the message streaming variation of assertions.

TEST(AssertionWithMessageTest, EXPECT)
{
    EXPECT_EQ(1, 1) << "This should succeed.";
    EXPECT_NONFATAL_FAILURE(EXPECT_NE(1, 1) << "Expected failure #1.",
                            "Expected failure #1");
    EXPECT_LE(1, 2) << "This should succeed.";
    EXPECT_NONFATAL_FAILURE(EXPECT_LT(1, 0) << "Expected failure #2.",
                            "Expected failure #2.");
    EXPECT_GE(1, 0) << "This should succeed.";
    EXPECT_NONFATAL_FAILURE(EXPECT_GT(1, 2) << "Expected failure #3.",
                            "Expected failure #3.");

    EXPECT_STREQ("1", "1") << "This should succeed.";
    EXPECT_NONFATAL_FAILURE(EXPECT_STRNE("1", "1") << "Expected failure #4.",
                            "Expected failure #4.");
    EXPECT_STRCASEEQ("a", "A") << "This should succeed.";
    EXPECT_NONFATAL_FAILURE(EXPECT_STRCASENE("a", "A") << "Expected failure #5.",
                            "Expected failure #5.");

    EXPECT_FLOAT_EQ(1, 1) << "This should succeed.";
    EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(1, 1.2) << "Expected failure #6.",
                            "Expected failure #6.");
    EXPECT_NEAR(1, 1.1, 0.2) << "This should succeed.";
}

TEST(AssertionWithMessageTest, ASSERT)
{
    ASSERT_EQ(1, 1) << "This should succeed.";
    ASSERT_NE(1, 2) << "This should succeed.";
    ASSERT_LE(1, 2) << "This should succeed.";
    ASSERT_LT(1, 2) << "This should succeed.";
    ASSERT_GE(1, 0) << "This should succeed.";
    EXPECT_FATAL_FAILURE(ASSERT_GT(1, 2) << "Expected failure.",
                         "Expected failure.");
}

TEST(AssertionWithMessageTest, ASSERT_STR)
{
    ASSERT_STREQ("1", "1") << "This should succeed.";
    ASSERT_STRNE("1", "2") << "This should succeed.";
    ASSERT_STRCASEEQ("a", "A") << "This should succeed.";
    EXPECT_FATAL_FAILURE(ASSERT_STRCASENE("a", "A") << "Expected failure.",
                         "Expected failure.");
}

TEST(AssertionWithMessageTest, ASSERT_FLOATING)
{
    ASSERT_FLOAT_EQ(1, 1) << "This should succeed.";
    ASSERT_DOUBLE_EQ(1, 1) << "This should succeed.";
    EXPECT_FATAL_FAILURE(ASSERT_NEAR(1, 1.2, 0.1) << "Expect failure.", // NOLINT
                         "Expect failure.");
    // To work around a bug in gcc 2.95.0, there is intentionally no
    // space after the first comma in the previous statement.
}

// Tests using ASSERT_FALSE with a streamed message.
TEST(AssertionWithMessageTest, ASSERT_FALSE)
{
    ASSERT_FALSE(false) << "This shouldn't fail.";
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_FALSE(true) << "Expected failure: " << 2 << " > " << 1
                           << " evaluates to " << true;
    },
                         "Expected failure");
}

// Tests using FAIL with a streamed message.
TEST(AssertionWithMessageTest, FAIL)
{
    EXPECT_FATAL_FAILURE(FAIL() << 0,
                         "0");
}

// Tests using SUCCEED with a streamed message.
TEST(AssertionWithMessageTest, SUCCEED)
{
    SUCCEED() << "Success == " << 1;
}

// Tests using ASSERT_TRUE with a streamed message.
TEST(AssertionWithMessageTest, ASSERT_TRUE)
{
    ASSERT_TRUE(true) << "This should succeed.";
    ASSERT_TRUE(true) << true;
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_TRUE(false) << static_cast<const char *>(NULL)
                           << static_cast<char *>(NULL);
    },
                         "(null)(null)");
}

#if GTEST_OS_WINDOWS
// Tests using wide strings in assertion messages.
TEST(AssertionWithMessageTest, WideStringMessage)
{
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_TRUE(false) << L"This failure is expected.\x8119";
    },
                            "This failure is expected.");
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_EQ(1, 2) << "This failure is "
                        << L"expected too.\x8120";
    },
                         "This failure is expected too.");
}
#endif // GTEST_OS_WINDOWS

// Tests EXPECT_TRUE.
TEST(ExpectTest, EXPECT_TRUE)
{
    EXPECT_TRUE(true) << "Intentional success";
    EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(false) << "Intentional failure #1.",
                            "Intentional failure #1.");
    EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(false) << "Intentional failure #2.",
                            "Intentional failure #2.");
    EXPECT_TRUE(2 > 1); // NOLINT
    EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(2 < 1),
                            "Value of: 2 < 1\n"
                            "  Actual: false\n"
                            "Expected: true");
    EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(2 > 3),
                            "2 > 3");
}

// Tests EXPECT_TRUE(predicate) for predicates returning AssertionResult.
TEST(ExpectTest, ExpectTrueWithAssertionResult)
{
    EXPECT_TRUE(ResultIsEven(2));
    EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(ResultIsEven(3)),
                            "Value of: ResultIsEven(3)\n"
                            "  Actual: false (3 is odd)\n"
                            "Expected: true");
    EXPECT_TRUE(ResultIsEvenNoExplanation(2));
    EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(ResultIsEvenNoExplanation(3)),
                            "Value of: ResultIsEvenNoExplanation(3)\n"
                            "  Actual: false (3 is odd)\n"
                            "Expected: true");
}

// Tests EXPECT_FALSE with a streamed message.
TEST(ExpectTest, EXPECT_FALSE)
{
    EXPECT_FALSE(2 < 1); // NOLINT
    EXPECT_FALSE(false) << "Intentional success";
    EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(true) << "Intentional failure #1.",
                            "Intentional failure #1.");
    EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(true) << "Intentional failure #2.",
                            "Intentional failure #2.");
    EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(2 > 1),
                            "Value of: 2 > 1\n"
                            "  Actual: true\n"
                            "Expected: false");
    EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(2 < 3),
                            "2 < 3");
}

// Tests EXPECT_FALSE(predicate) for predicates returning AssertionResult.
TEST(ExpectTest, ExpectFalseWithAssertionResult)
{
    EXPECT_FALSE(ResultIsEven(3));
    EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(ResultIsEven(2)),
                            "Value of: ResultIsEven(2)\n"
                            "  Actual: true (2 is even)\n"
                            "Expected: false");
    EXPECT_FALSE(ResultIsEvenNoExplanation(3));
    EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(ResultIsEvenNoExplanation(2)),
                            "Value of: ResultIsEvenNoExplanation(2)\n"
                            "  Actual: true\n"
                            "Expected: false");
}

#ifdef __BORLANDC__
// Restores warnings after previous "#pragma option push" suppressed them
#pragma option pop
#endif

// Tests EXPECT_EQ.
TEST(ExpectTest, EXPECT_EQ)
{
    EXPECT_EQ(5, 2 + 3);
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(5, 2 * 3),
                            "Expected equality of these values:\n"
                            "  5\n"
                            "  2*3\n"
                            "    Which is: 6");
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(5, 2 - 3),
                            "2 - 3");
}

// Tests using EXPECT_EQ on double values.  The purpose is to make
// sure that the specialization we did for integer and anonymous enums
// isn't used for double arguments.
TEST(ExpectTest, EXPECT_EQ_Double)
{
    // A success.
    EXPECT_EQ(5.6, 5.6);

    // A failure.
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(5.1, 5.2),
                            "5.1");
}

#if GTEST_CAN_COMPARE_NULL
// Tests EXPECT_EQ(NULL, pointer).
TEST(ExpectTest, EXPECT_EQ_NULL)
{
    // A success.
    const char *p = NULL;
    // Some older GCC versions may issue a spurious warning in this or the next
    // assertion statement. This warning should not be suppressed with
    // static_cast since the test verifies the ability to use bare NULL as the
    // expected parameter to the macro.
    EXPECT_EQ(NULL, p);

    // A failure.
    int n = 0;
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(NULL, &n),
                            "  &n\n    Which is:");
}
#endif // GTEST_CAN_COMPARE_NULL

// Tests EXPECT_EQ(0, non_pointer).  Since the literal 0 can be
// treated as a null pointer by the compiler, we need to make sure
// that EXPECT_EQ(0, non_pointer) isn't interpreted by Google Test as
// EXPECT_EQ(static_cast<void*>(NULL), non_pointer).
TEST(ExpectTest, EXPECT_EQ_0)
{
    int n = 0;

    // A success.
    EXPECT_EQ(0, n);

    // A failure.
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(0, 5.6),
                            "  0\n  5.6");
}

// Tests EXPECT_NE.
TEST(ExpectTest, EXPECT_NE)
{
    EXPECT_NE(6, 7);

    EXPECT_NONFATAL_FAILURE(EXPECT_NE('a', 'a'),
                            "Expected: ('a') != ('a'), "
                            "actual: 'a' (97, 0x61) vs 'a' (97, 0x61)");
    EXPECT_NONFATAL_FAILURE(EXPECT_NE(2, 2),
                            "2");
    char *const p0 = NULL;
    EXPECT_NONFATAL_FAILURE(EXPECT_NE(p0, p0),
                            "p0");
    // Only way to get the Nokia compiler to compile the cast
    // is to have a separate void* variable first. Putting
    // the two casts on the same line doesn't work, neither does
    // a direct C-style to char*.
    void *pv1 = (void *)0x1234; // NOLINT
    char *const p1 = reinterpret_cast<char *>(pv1);
    EXPECT_NONFATAL_FAILURE(EXPECT_NE(p1, p1),
                            "p1");
}

// Tests EXPECT_LE.
TEST(ExpectTest, EXPECT_LE)
{
    EXPECT_LE(2, 3);
    EXPECT_LE(2, 2);
    EXPECT_NONFATAL_FAILURE(EXPECT_LE(2, 0),
                            "Expected: (2) <= (0), actual: 2 vs 0");
    EXPECT_NONFATAL_FAILURE(EXPECT_LE(1.1, 0.9),
                            "(1.1) <= (0.9)");
}

// Tests EXPECT_LT.
TEST(ExpectTest, EXPECT_LT)
{
    EXPECT_LT(2, 3);
    EXPECT_NONFATAL_FAILURE(EXPECT_LT(2, 2),
                            "Expected: (2) < (2), actual: 2 vs 2");
    EXPECT_NONFATAL_FAILURE(EXPECT_LT(2, 1),
                            "(2) < (1)");
}

// Tests EXPECT_GE.
TEST(ExpectTest, EXPECT_GE)
{
    EXPECT_GE(2, 1);
    EXPECT_GE(2, 2);
    EXPECT_NONFATAL_FAILURE(EXPECT_GE(2, 3),
                            "Expected: (2) >= (3), actual: 2 vs 3");
    EXPECT_NONFATAL_FAILURE(EXPECT_GE(0.9, 1.1),
                            "(0.9) >= (1.1)");
}

// Tests EXPECT_GT.
TEST(ExpectTest, EXPECT_GT)
{
    EXPECT_GT(2, 1);
    EXPECT_NONFATAL_FAILURE(EXPECT_GT(2, 2),
                            "Expected: (2) > (2), actual: 2 vs 2");
    EXPECT_NONFATAL_FAILURE(EXPECT_GT(2, 3),
                            "(2) > (3)");
}

#if GTEST_HAS_EXCEPTIONS

// Tests EXPECT_THROW.
TEST(ExpectTest, EXPECT_THROW)
{
    EXPECT_THROW(ThrowAnInteger(), int);
    EXPECT_NONFATAL_FAILURE(EXPECT_THROW(ThrowAnInteger(), bool),
                            "Expected: ThrowAnInteger() throws an exception of "
                            "type bool.\n  Actual: it throws a different type.");
    EXPECT_NONFATAL_FAILURE(
        EXPECT_THROW(ThrowNothing(), bool),
        "Expected: ThrowNothing() throws an exception of type bool.\n"
        "  Actual: it throws nothing.");
}

// Tests EXPECT_NO_THROW.
TEST(ExpectTest, EXPECT_NO_THROW)
{
    EXPECT_NO_THROW(ThrowNothing());
    EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(ThrowAnInteger()),
                            "Expected: ThrowAnInteger() doesn't throw an "
                            "exception.\n  Actual: it throws.");
}

// Tests EXPECT_ANY_THROW.
TEST(ExpectTest, EXPECT_ANY_THROW)
{
    EXPECT_ANY_THROW(ThrowAnInteger());
    EXPECT_NONFATAL_FAILURE(
        EXPECT_ANY_THROW(ThrowNothing()),
        "Expected: ThrowNothing() throws an exception.\n"
        "  Actual: it doesn't.");
}

#endif // GTEST_HAS_EXCEPTIONS

// Make sure we deal with the precedence of <<.
TEST(ExpectTest, ExpectPrecedence)
{
    EXPECT_EQ(1 < 2, true);
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(true, true && false),
                            "  true && false\n    Which is: false");
}

// Tests the StreamableToString() function.

// Tests using StreamableToString() on a scalar.
TEST(StreamableToStringTest, Scalar)
{
    EXPECT_STREQ("5", StreamableToString(5).c_str());
}

// Tests using StreamableToString() on a non-char pointer.
TEST(StreamableToStringTest, Pointer)
{
    int n = 0;
    int *p = &n;
    EXPECT_STRNE("(null)", StreamableToString(p).c_str());
}

// Tests using StreamableToString() on a NULL non-char pointer.
TEST(StreamableToStringTest, NullPointer)
{
    int *p = NULL;
    EXPECT_STREQ("(null)", StreamableToString(p).c_str());
}

// Tests using StreamableToString() on a C string.
TEST(StreamableToStringTest, CString)
{
    EXPECT_STREQ("Foo", StreamableToString("Foo").c_str());
}

// Tests using StreamableToString() on a NULL C string.
TEST(StreamableToStringTest, NullCString)
{
    char *p = NULL;
    EXPECT_STREQ("(null)", StreamableToString(p).c_str());
}

// Tests using streamable values as assertion messages.

// Tests using std::string as an assertion message.
TEST(StreamableTest, string)
{
    static const std::string str(
        "This failure message is a std::string, and is expected.");
    EXPECT_FATAL_FAILURE(FAIL() << str,
                         str.c_str());
}

// Tests that we can output strings containing embedded NULs.
// Limited to Linux because we can only do this with std::string's.
TEST(StreamableTest, stringWithEmbeddedNUL)
{
    static const char char_array_with_nul[] =
        "Here's a NUL\0 and some more string";
    static const std::string string_with_nul(char_array_with_nul,
                                             sizeof(char_array_with_nul)
                                                 - 1); // drops the trailing NUL
    EXPECT_FATAL_FAILURE(FAIL() << string_with_nul,
                         "Here's a NUL\\0 and some more string");
}

// Tests that we can output a NUL char.
TEST(StreamableTest, NULChar)
{
    EXPECT_FATAL_FAILURE({ // NOLINT
        FAIL() << "A NUL" << '\0' << " and some more string";
    },
                         "A NUL\\0 and some more string");
}

// Tests using int as an assertion message.
TEST(StreamableTest, int)
{
    EXPECT_FATAL_FAILURE(FAIL() << 900913,
                         "900913");
}

// Tests using NULL char pointer as an assertion message.
//
// In MSVC, streaming a NULL char * causes access violation.  Google Test
// implemented a workaround (substituting "(null)" for NULL).  This
// tests whether the workaround works.
TEST(StreamableTest, NullCharPtr)
{
    EXPECT_FATAL_FAILURE(FAIL() << static_cast<const char *>(NULL),
                         "(null)");
}

// Tests that basic IO manipulators (endl, ends, and flush) can be
// streamed to testing::Message.
TEST(StreamableTest, BasicIoManip)
{
    EXPECT_FATAL_FAILURE({ // NOLINT
        FAIL() << "Line 1." << std::endl
               << "A NUL char " << std::ends << std::flush << " in line 2.";
    },
                         "Line 1.\nA NUL char \\0 in line 2.");
}

// Tests the macros that haven't been covered so far.

void AddFailureHelper(bool *aborted)
{
    *aborted = true;
    ADD_FAILURE() << "Intentional failure.";
    *aborted = false;
}

// Tests ADD_FAILURE.
TEST(MacroTest, ADD_FAILURE)
{
    bool aborted = true;
    EXPECT_NONFATAL_FAILURE(AddFailureHelper(&aborted),
                            "Intentional failure.");
    EXPECT_FALSE(aborted);
}

// Tests ADD_FAILURE_AT.
TEST(MacroTest, ADD_FAILURE_AT)
{
    // Verifies that ADD_FAILURE_AT does generate a nonfatal failure and
    // the failure message contains the user-streamed part.
    EXPECT_NONFATAL_FAILURE(ADD_FAILURE_AT("foo.cc", 42) << "Wrong!", "Wrong!");

    // Verifies that the user-streamed part is optional.
    EXPECT_NONFATAL_FAILURE(ADD_FAILURE_AT("foo.cc", 42), "Failed");

    // Unfortunately, we cannot verify that the failure message contains
    // the right file path and line number the same way, as
    // EXPECT_NONFATAL_FAILURE() doesn't get to see the file path and
    // line number.  Instead, we do that in googletest-output-test_.cc.
}

// Tests FAIL.
TEST(MacroTest, FAIL)
{
    EXPECT_FATAL_FAILURE(FAIL(),
                         "Failed");
    EXPECT_FATAL_FAILURE(FAIL() << "Intentional failure.",
                         "Intentional failure.");
}

// Tests SUCCEED
TEST(MacroTest, SUCCEED)
{
    SUCCEED();
    SUCCEED() << "Explicit success.";
}

// Tests for EXPECT_EQ() and ASSERT_EQ().
//
// These tests fail *intentionally*, s.t. the failure messages can be
// generated and tested.
//
// We have different tests for different argument types.

// Tests using bool values in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, Bool)
{
    EXPECT_EQ(true, true);
    EXPECT_FATAL_FAILURE({
        bool false_value = false;
        ASSERT_EQ(false_value, true);
    },
                         "  false_value\n    Which is: false\n  true");
}

// Tests using int values in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, Int)
{
    ASSERT_EQ(32, 32);
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(32, 33),
                            "  32\n  33");
}

// Tests using time_t values in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, Time_T)
{
    EXPECT_EQ(static_cast<time_t>(0),
              static_cast<time_t>(0));
    EXPECT_FATAL_FAILURE(ASSERT_EQ(static_cast<time_t>(0),
                                   static_cast<time_t>(1234)),
                         "1234");
}

// Tests using char values in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, Char)
{
    ASSERT_EQ('z', 'z');
    const char ch = 'b';
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ('\0', ch),
                            "  ch\n    Which is: 'b'");
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ('a', ch),
                            "  ch\n    Which is: 'b'");
}

// Tests using wchar_t values in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, WideChar)
{
    EXPECT_EQ(L'b', L'b');

    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(L'\0', L'x'),
                            "Expected equality of these values:\n"
                            "  L'\0'\n"
                            "    Which is: L'\0' (0, 0x0)\n"
                            "  L'x'\n"
                            "    Which is: L'x' (120, 0x78)");

    static wchar_t wchar;
    wchar = L'b';
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(L'a', wchar),
                            "wchar");
    wchar = 0x8119;
    EXPECT_FATAL_FAILURE(ASSERT_EQ(static_cast<wchar_t>(0x8120), wchar),
                         "  wchar\n    Which is: L'");
}

// Tests using ::std::string values in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, StdString)
{
    // Compares a const char* to an std::string that has identical
    // content.
    ASSERT_EQ("Test", ::std::string("Test"));

    // Compares two identical std::strings.
    static const ::std::string str1("A * in the middle");
    static const ::std::string str2(str1);
    EXPECT_EQ(str1, str2);

    // Compares a const char* to an std::string that has different
    // content
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ("Test", ::std::string("test")),
                            "\"test\"");

    // Compares an std::string to a char* that has different content.
    char *const p1 = const_cast<char *>("foo");
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(::std::string("bar"), p1),
                            "p1");

    // Compares two std::strings that have different contents, one of
    // which having a NUL character in the middle.  This should fail.
    static ::std::string str3(str1);
    str3.at(2) = '\0';
    EXPECT_FATAL_FAILURE(ASSERT_EQ(str1, str3),
                         "  str3\n    Which is: \"A \\0 in the middle\"");
}

#if GTEST_HAS_STD_WSTRING

// Tests using ::std::wstring values in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, StdWideString)
{
    // Compares two identical std::wstrings.
    const ::std::wstring wstr1(L"A * in the middle");
    const ::std::wstring wstr2(wstr1);
    ASSERT_EQ(wstr1, wstr2);

    // Compares an std::wstring to a const wchar_t* that has identical
    // content.
    const wchar_t kTestX8119[] = {'T', 'e', 's', 't', 0x8119, '\0'};
    EXPECT_EQ(::std::wstring(kTestX8119), kTestX8119);

    // Compares an std::wstring to a const wchar_t* that has different
    // content.
    const wchar_t kTestX8120[] = {'T', 'e', 's', 't', 0x8120, '\0'};
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_EQ(::std::wstring(kTestX8119), kTestX8120);
    },
                            "kTestX8120");

    // Compares two std::wstrings that have different contents, one of
    // which having a NUL character in the middle.
    ::std::wstring wstr3(wstr1);
    wstr3.at(2) = L'\0';
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(wstr1, wstr3),
                            "wstr3");

    // Compares a wchar_t* to an std::wstring that has different
    // content.
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_EQ(const_cast<wchar_t *>(L"foo"), ::std::wstring(L"bar"));
    },
                         "");
}

#endif // GTEST_HAS_STD_WSTRING

#if GTEST_HAS_GLOBAL_STRING
// Tests using ::string values in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, GlobalString)
{
    // Compares a const char* to a ::string that has identical content.
    EXPECT_EQ("Test", ::string("Test"));

    // Compares two identical ::strings.
    const ::string str1("A * in the middle");
    const ::string str2(str1);
    ASSERT_EQ(str1, str2);

    // Compares a ::string to a const char* that has different content.
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(::string("Test"), "test"),
                            "test");

    // Compares two ::strings that have different contents, one of which
    // having a NUL character in the middle.
    ::string str3(str1);
    str3.at(2) = '\0';
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(str1, str3),
                            "str3");

    // Compares a ::string to a char* that has different content.
    EXPECT_FATAL_FAILURE({ // NOLINT
        ASSERT_EQ(::string("bar"), const_cast<char *>("foo"));
    },
                         "");
}

#endif // GTEST_HAS_GLOBAL_STRING

#if GTEST_HAS_GLOBAL_WSTRING

// Tests using ::wstring values in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, GlobalWideString)
{
    // Compares two identical ::wstrings.
    static const ::wstring wstr1(L"A * in the middle");
    static const ::wstring wstr2(wstr1);
    EXPECT_EQ(wstr1, wstr2);

    // Compares a const wchar_t* to a ::wstring that has identical content.
    const wchar_t kTestX8119[] = {'T', 'e', 's', 't', 0x8119, '\0'};
    ASSERT_EQ(kTestX8119, ::wstring(kTestX8119));

    // Compares a const wchar_t* to a ::wstring that has different
    // content.
    const wchar_t kTestX8120[] = {'T', 'e', 's', 't', 0x8120, '\0'};
    EXPECT_NONFATAL_FAILURE({ // NOLINT
        EXPECT_EQ(kTestX8120, ::wstring(kTestX8119));
    },
                            "Test\\x8119");

    // Compares a wchar_t* to a ::wstring that has different content.
    wchar_t *const p1 = const_cast<wchar_t *>(L"foo");
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p1, ::wstring(L"bar")),
                            "bar");

    // Compares two ::wstrings that have different contents, one of which
    // having a NUL character in the middle.
    static ::wstring wstr3;
    wstr3 = wstr1;
    wstr3.at(2) = L'\0';
    EXPECT_FATAL_FAILURE(ASSERT_EQ(wstr1, wstr3),
                         "wstr3");
}

#endif // GTEST_HAS_GLOBAL_WSTRING

// Tests using char pointers in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, CharPointer)
{
    char *const p0 = NULL;
    // Only way to get the Nokia compiler to compile the cast
    // is to have a separate void* variable first. Putting
    // the two casts on the same line doesn't work, neither does
    // a direct C-style to char*.
    void *pv1 = (void *)0x1234; // NOLINT
    void *pv2 = (void *)0xABC0; // NOLINT
    char *const p1 = reinterpret_cast<char *>(pv1);
    char *const p2 = reinterpret_cast<char *>(pv2);
    ASSERT_EQ(p1, p1);

    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p0, p2),
                            "  p2\n    Which is:");
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p1, p2),
                            "  p2\n    Which is:");
    EXPECT_FATAL_FAILURE(ASSERT_EQ(reinterpret_cast<char *>(0x1234),
                                   reinterpret_cast<char *>(0xABC0)),
                         "ABC0");
}

// Tests using wchar_t pointers in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, WideCharPointer)
{
    wchar_t *const p0 = NULL;
    // Only way to get the Nokia compiler to compile the cast
    // is to have a separate void* variable first. Putting
    // the two casts on the same line doesn't work, neither does
    // a direct C-style to char*.
    void *pv1 = (void *)0x1234; // NOLINT
    void *pv2 = (void *)0xABC0; // NOLINT
    wchar_t *const p1 = reinterpret_cast<wchar_t *>(pv1);
    wchar_t *const p2 = reinterpret_cast<wchar_t *>(pv2);
    EXPECT_EQ(p0, p0);

    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p0, p2),
                            "  p2\n    Which is:");
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p1, p2),
                            "  p2\n    Which is:");
    void *pv3 = (void *)0x1234; // NOLINT
    void *pv4 = (void *)0xABC0; // NOLINT
    const wchar_t *p3 = reinterpret_cast<const wchar_t *>(pv3);
    const wchar_t *p4 = reinterpret_cast<const wchar_t *>(pv4);
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p3, p4),
                            "p4");
}

// Tests using other types of pointers in {EXPECT|ASSERT}_EQ.
TEST(EqAssertionTest, OtherPointer)
{
    ASSERT_EQ(static_cast<const int *>(NULL),
              static_cast<const int *>(NULL));
    EXPECT_FATAL_FAILURE(ASSERT_EQ(static_cast<const int *>(NULL),
                                   reinterpret_cast<const int *>(0x1234)),
                         "0x1234");
}

// A class that supports binary comparison operators but not streaming.
class UnprintableChar
{
public:
    explicit UnprintableChar(char ch)
        : char_(ch)
    {
    }

    bool operator==(const UnprintableChar &rhs) const
    {
        return char_ == rhs.char_;
    }
    bool operator!=(const UnprintableChar &rhs) const
    {
        return char_ != rhs.char_;
    }
    bool operator<(const UnprintableChar &rhs) const
    {
        return char_ < rhs.char_;
    }
    bool operator<=(const UnprintableChar &rhs) const
    {
        return char_ <= rhs.char_;
    }
    bool operator>(const UnprintableChar &rhs) const
    {
        return char_ > rhs.char_;
    }
    bool operator>=(const UnprintableChar &rhs) const
    {
        return char_ >= rhs.char_;
    }

private:
    char char_;
};

// Tests that ASSERT_EQ() and friends don't require the arguments to
// be printable.
TEST(ComparisonAssertionTest, AcceptsUnprintableArgs)
{
    const UnprintableChar x('x'), y('y');
    ASSERT_EQ(x, x);
    EXPECT_NE(x, y);
    ASSERT_LT(x, y);
    EXPECT_LE(x, y);
    ASSERT_GT(y, x);
    EXPECT_GE(x, x);

    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(x, y), "1-byte object <78>");
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(x, y), "1-byte object <79>");
    EXPECT_NONFATAL_FAILURE(EXPECT_LT(y, y), "1-byte object <79>");
    EXPECT_NONFATAL_FAILURE(EXPECT_GT(x, y), "1-byte object <78>");
    EXPECT_NONFATAL_FAILURE(EXPECT_GT(x, y), "1-byte object <79>");

    // Code tested by EXPECT_FATAL_FAILURE cannot reference local
    // variables, so we have to write UnprintableChar('x') instead of x.
#ifndef __BORLANDC__
    // ICE's in C++Builder.
    EXPECT_FATAL_FAILURE(ASSERT_NE(UnprintableChar('x'), UnprintableChar('x')),
                         "1-byte object <78>");
    EXPECT_FATAL_FAILURE(ASSERT_LE(UnprintableChar('y'), UnprintableChar('x')),
                         "1-byte object <78>");
#endif
    EXPECT_FATAL_FAILURE(ASSERT_LE(UnprintableChar('y'), UnprintableChar('x')),
                         "1-byte object <79>");
    EXPECT_FATAL_FAILURE(ASSERT_GE(UnprintableChar('x'), UnprintableChar('y')),
                         "1-byte object <78>");
    EXPECT_FATAL_FAILURE(ASSERT_GE(UnprintableChar('x'), UnprintableChar('y')),
                         "1-byte object <79>");
}

// Tests the FRIEND_TEST macro.

// This class has a private member we want to test.  We will test it
// both in a TEST and in a TEST_F.
class Foo
{
public:
    Foo() {}

private:
    int Bar() const { return 1; }

    // Declares the friend tests that can access the private member
    // Bar().
    FRIEND_TEST(FRIEND_TEST_Test, TEST);
    FRIEND_TEST(FRIEND_TEST_Test2, TEST_F);
};

// Tests that the FRIEND_TEST declaration allows a TEST to access a
// class's private members.  This should compile.
TEST(FRIEND_TEST_Test, TEST)
{
    ASSERT_EQ(1, Foo().Bar());
}

// The fixture needed to test using FRIEND_TEST with TEST_F.
class FRIEND_TEST_Test2 : public Test
{
protected:
    Foo foo;
};

// Tests that the FRIEND_TEST declaration allows a TEST_F to access a
// class's private members.  This should compile.
TEST_F(FRIEND_TEST_Test2, TEST_F)
{
    ASSERT_EQ(1, foo.Bar());
}

// Tests the life cycle of Test objects.

// The test fixture for testing the life cycle of Test objects.
//
// This class counts the number of live test objects that uses this
// fixture.
class TestLifeCycleTest : public Test
{
protected:
    // Constructor.  Increments the number of test objects that uses
    // this fixture.
    TestLifeCycleTest() { count_++; }

    // Destructor.  Decrements the number of test objects that uses this
    // fixture.
    ~TestLifeCycleTest() { count_--; }

    // Returns the number of live test objects that uses this fixture.
    int count() const { return count_; }

private:
    static int count_;
};

int TestLifeCycleTest::count_ = 0;

// Tests the life cycle of test objects.
TEST_F(TestLifeCycleTest, Test1)
{
    // There should be only one test object in this test case that's
    // currently alive.
    ASSERT_EQ(1, count());
}

// Tests the life cycle of test objects.
TEST_F(TestLifeCycleTest, Test2)
{
    // After Test1 is done and Test2 is started, there should still be
    // only one live test object, as the object for Test1 should've been
    // deleted.
    ASSERT_EQ(1, count());
}

} // namespace

// Tests that the copy constructor works when it is NOT optimized away by
// the compiler.
TEST(AssertionResultTest, CopyConstructorWorksWhenNotOptimied)
{
    // Checks that the copy constructor doesn't try to dereference NULL pointers
    // in the source object.
    AssertionResult r1 = AssertionSuccess();
    AssertionResult r2 = r1;
    // The following line is added to prevent the compiler from optimizing
    // away the constructor call.
    r1 << "abc";

    AssertionResult r3 = r1;
    EXPECT_EQ(static_cast<bool>(r3), static_cast<bool>(r1));
    EXPECT_STREQ("abc", r1.message());
}

// Tests that AssertionSuccess and AssertionFailure construct
// AssertionResult objects as expected.
TEST(AssertionResultTest, ConstructionWorks)
{
    AssertionResult r1 = AssertionSuccess();
    EXPECT_TRUE(r1);
    EXPECT_STREQ("", r1.message());

    AssertionResult r2 = AssertionSuccess() << "abc";
    EXPECT_TRUE(r2);
    EXPECT_STREQ("abc", r2.message());

    AssertionResult r3 = AssertionFailure();
    EXPECT_FALSE(r3);
    EXPECT_STREQ("", r3.message());

    AssertionResult r4 = AssertionFailure() << "def";
    EXPECT_FALSE(r4);
    EXPECT_STREQ("def", r4.message());

    AssertionResult r5 = AssertionFailure(Message() << "ghi");
    EXPECT_FALSE(r5);
    EXPECT_STREQ("ghi", r5.message());
}

// Tests that the negation flips the predicate result but keeps the message.
TEST(AssertionResultTest, NegationWorks)
{
    AssertionResult r1 = AssertionSuccess() << "abc";
    EXPECT_FALSE(!r1);
    EXPECT_STREQ("abc", (!r1).message());

    AssertionResult r2 = AssertionFailure() << "def";
    EXPECT_TRUE(!r2);
    EXPECT_STREQ("def", (!r2).message());
}

TEST(AssertionResultTest, StreamingWorks)
{
    AssertionResult r = AssertionSuccess();
    r << "abc" << 'd' << 0 << true;
    EXPECT_STREQ("abcd0true", r.message());
}

TEST(AssertionResultTest, CanStreamOstreamManipulators)
{
    AssertionResult r = AssertionSuccess();
    r << "Data" << std::endl
      << std::flush << std::ends << "Will be visible";
    EXPECT_STREQ("Data\n\\0Will be visible", r.message());
}

// The next test uses explicit conversion operators -- a C++11 feature.
#if GTEST_LANG_CXX11

TEST(AssertionResultTest, ConstructibleFromContextuallyConvertibleToBool)
{
    struct ExplicitlyConvertibleToBool {
        explicit operator bool() const { return value; }
        bool value;
    };
    ExplicitlyConvertibleToBool v1 = {false};
    ExplicitlyConvertibleToBool v2 = {true};
    EXPECT_FALSE(v1);
    EXPECT_TRUE(v2);
}

#endif // GTEST_LANG_CXX11

struct ConvertibleToAssertionResult {
    operator AssertionResult() const { return AssertionResult(true); }
};

TEST(AssertionResultTest, ConstructibleFromImplicitlyConvertible)
{
    ConvertibleToAssertionResult obj;
    EXPECT_TRUE(obj);
}

// Tests streaming a user type whose definition and operator << are
// both in the global namespace.
class Base
{
public:
    explicit Base(int an_x)
        : x_(an_x)
    {
    }
    int x() const { return x_; }

private:
    int x_;
};
std::ostream &operator<<(std::ostream &os,
                         const Base &val)
{
    return os << val.x();
}
std::ostream &operator<<(std::ostream &os,
                         const Base *pointer)
{
    return os << "(" << pointer->x() << ")";
}

TEST(MessageTest, CanStreamUserTypeInGlobalNameSpace)
{
    Message msg;
    Base a(1);

    msg << a << &a; // Uses ::operator<<.
    EXPECT_STREQ("1(1)", msg.GetString().c_str());
}

// Tests streaming a user type whose definition and operator<< are
// both in an unnamed namespace.
namespace {
class MyTypeInUnnamedNameSpace : public Base
{
public:
    explicit MyTypeInUnnamedNameSpace(int an_x)
        : Base(an_x)
    {
    }
};
std::ostream &operator<<(std::ostream &os,
                         const MyTypeInUnnamedNameSpace &val)
{
    return os << val.x();
}
std::ostream &operator<<(std::ostream &os,
                         const MyTypeInUnnamedNameSpace *pointer)
{
    return os << "(" << pointer->x() << ")";
}
} // namespace

TEST(MessageTest, CanStreamUserTypeInUnnamedNameSpace)
{
    Message msg;
    MyTypeInUnnamedNameSpace a(1);

    msg << a << &a; // Uses <unnamed_namespace>::operator<<.
    EXPECT_STREQ("1(1)", msg.GetString().c_str());
}

// Tests streaming a user type whose definition and operator<< are
// both in a user namespace.
namespace namespace1 {
class MyTypeInNameSpace1 : public Base
{
public:
    explicit MyTypeInNameSpace1(int an_x)
        : Base(an_x)
    {
    }
};
std::ostream &operator<<(std::ostream &os,
                         const MyTypeInNameSpace1 &val)
{
    return os << val.x();
}
std::ostream &operator<<(std::ostream &os,
                         const MyTypeInNameSpace1 *pointer)
{
    return os << "(" << pointer->x() << ")";
}
} // namespace namespace1

TEST(MessageTest, CanStreamUserTypeInUserNameSpace)
{
    Message msg;
    namespace1::MyTypeInNameSpace1 a(1);

    msg << a << &a; // Uses namespace1::operator<<.
    EXPECT_STREQ("1(1)", msg.GetString().c_str());
}

// Tests streaming a user type whose definition is in a user namespace
// but whose operator<< is in the global namespace.
namespace namespace2 {
class MyTypeInNameSpace2 : public ::Base
{
public:
    explicit MyTypeInNameSpace2(int an_x)
        : Base(an_x)
    {
    }
};
} // namespace namespace2
std::ostream &operator<<(std::ostream &os,
                         const namespace2::MyTypeInNameSpace2 &val)
{
    return os << val.x();
}
std::ostream &operator<<(std::ostream &os,
                         const namespace2::MyTypeInNameSpace2 *pointer)
{
    return os << "(" << pointer->x() << ")";
}

TEST(MessageTest, CanStreamUserTypeInUserNameSpaceWithStreamOperatorInGlobal)
{
    Message msg;
    namespace2::MyTypeInNameSpace2 a(1);

    msg << a << &a; // Uses ::operator<<.
    EXPECT_STREQ("1(1)", msg.GetString().c_str());
}

// Tests streaming NULL pointers to testing::Message.
TEST(MessageTest, NullPointers)
{
    Message msg;
    char *const p1 = NULL;
    unsigned char *const p2 = NULL;
    int *p3 = NULL;
    double *p4 = NULL;
    bool *p5 = NULL;
    Message *p6 = NULL;

    msg << p1 << p2 << p3 << p4 << p5 << p6;
    ASSERT_STREQ("(null)(null)(null)(null)(null)(null)",
                 msg.GetString().c_str());
}

// Tests streaming wide strings to testing::Message.
TEST(MessageTest, WideStrings)
{
    // Streams a NULL of type const wchar_t*.
    const wchar_t *const_wstr = NULL;
    EXPECT_STREQ("(null)",
                 (Message() << const_wstr).GetString().c_str());

    // Streams a NULL of type wchar_t*.
    wchar_t *wstr = NULL;
    EXPECT_STREQ("(null)",
                 (Message() << wstr).GetString().c_str());

    // Streams a non-NULL of type const wchar_t*.
    const_wstr = L"abc\x8119";
    EXPECT_STREQ("abc\xe8\x84\x99",
                 (Message() << const_wstr).GetString().c_str());

    // Streams a non-NULL of type wchar_t*.
    wstr = const_cast<wchar_t *>(const_wstr);
    EXPECT_STREQ("abc\xe8\x84\x99",
                 (Message() << wstr).GetString().c_str());
}

// This line tests that we can define tests in the testing namespace.
namespace testing {

// Tests the TestInfo class.

class TestInfoTest : public Test
{
protected:
    static const TestInfo *GetTestInfo(const char *test_name)
    {
        const TestCase *const test_case = GetUnitTestImpl()->GetTestCase("TestInfoTest", "", NULL, NULL);

        for (int i = 0; i < test_case->total_test_count(); ++i) {
            const TestInfo *const test_info = test_case->GetTestInfo(i);
            if (strcmp(test_name, test_info->name()) == 0)
                return test_info;
        }
        return NULL;
    }

    static const TestResult *GetTestResult(
        const TestInfo *test_info)
    {
        return test_info->result();
    }
};

// Tests TestInfo::test_case_name() and TestInfo::name().
TEST_F(TestInfoTest, Names)
{
    const TestInfo *const test_info = GetTestInfo("Names");

    ASSERT_STREQ("TestInfoTest", test_info->test_case_name());
    ASSERT_STREQ("Names", test_info->name());
}

// Tests TestInfo::result().
TEST_F(TestInfoTest, result)
{
    const TestInfo *const test_info = GetTestInfo("result");

    // Initially, there is no TestPartResult for this test.
    ASSERT_EQ(0, GetTestResult(test_info)->total_part_count());

    // After the previous assertion, there is still none.
    ASSERT_EQ(0, GetTestResult(test_info)->total_part_count());
}

#define VERIFY_CODE_LOCATION \
    const int expected_line = __LINE__ - 1; \
    const TestInfo *const test_info = GetUnitTestImpl()->current_test_info(); \
    ASSERT_TRUE(test_info); \
    EXPECT_STREQ(__FILE__, test_info->file()); \
    EXPECT_EQ(expected_line, test_info->line())

TEST(CodeLocationForTEST, Verify)
{
    VERIFY_CODE_LOCATION;
}

class CodeLocationForTESTF : public Test
{
};

TEST_F(CodeLocationForTESTF, Verify)
{
    VERIFY_CODE_LOCATION;
}

class CodeLocationForTESTP : public TestWithParam<int>
{
};

TEST_P(CodeLocationForTESTP, Verify)
{
    VERIFY_CODE_LOCATION;
}

INSTANTIATE_TEST_CASE_P(, CodeLocationForTESTP, Values(0));

template<typename T>
class CodeLocationForTYPEDTEST : public Test
{
};

TYPED_TEST_CASE(CodeLocationForTYPEDTEST, int);

TYPED_TEST(CodeLocationForTYPEDTEST, Verify)
{
    VERIFY_CODE_LOCATION;
}

template<typename T>
class CodeLocationForTYPEDTESTP : public Test
{
};

TYPED_TEST_CASE_P(CodeLocationForTYPEDTESTP);

TYPED_TEST_P(CodeLocationForTYPEDTESTP, Verify)
{
    VERIFY_CODE_LOCATION;
}

REGISTER_TYPED_TEST_CASE_P(CodeLocationForTYPEDTESTP, Verify);

INSTANTIATE_TYPED_TEST_CASE_P(My, CodeLocationForTYPEDTESTP, int);

#undef VERIFY_CODE_LOCATION

// Tests setting up and tearing down a test case.

class SetUpTestCaseTest : public Test
{
protected:
    // This will be called once before the first test in this test case
    // is run.
    static void SetUpTestCase()
    {
        printf("Setting up the test case . . .\n");

        // Initializes some shared resource.  In this simple example, we
        // just create a C string.  More complex stuff can be done if
        // desired.
        shared_resource_ = "123";

        // Increments the number of test cases that have been set up.
        counter_++;

        // SetUpTestCase() should be called only once.
        EXPECT_EQ(1, counter_);
    }

    // This will be called once after the last test in this test case is
    // run.
    static void TearDownTestCase()
    {
        printf("Tearing down the test case . . .\n");

        // Decrements the number of test cases that have been set up.
        counter_--;

        // TearDownTestCase() should be called only once.
        EXPECT_EQ(0, counter_);

        // Cleans up the shared resource.
        shared_resource_ = NULL;
    }

    // This will be called before each test in this test case.
    virtual void SetUp()
    {
        // SetUpTestCase() should be called only once, so counter_ should
        // always be 1.
        EXPECT_EQ(1, counter_);
    }

    // Number of test cases that have been set up.
    static int counter_;

    // Some resource to be shared by all tests in this test case.
    static const char *shared_resource_;
};

int SetUpTestCaseTest::counter_ = 0;
const char *SetUpTestCaseTest::shared_resource_ = NULL;

// A test that uses the shared resource.
TEST_F(SetUpTestCaseTest, Test1)
{
    EXPECT_STRNE(NULL, shared_resource_);
}

// Another test that uses the shared resource.
TEST_F(SetUpTestCaseTest, Test2)
{
    EXPECT_STREQ("123", shared_resource_);
}

// The ParseFlagsTest test case tests ParseGoogleTestFlagsOnly.

// The Flags struct stores a copy of all Google Test flags.
struct Flags {
    // Constructs a Flags struct where each flag has its default value.
    Flags()
        : also_run_disabled_tests(false)
        , break_on_failure(false)
        , catch_exceptions(false)
        , death_test_use_fork(false)
        , filter("")
        , list_tests(false)
        , output("")
        , print_time(true)
        , random_seed(0)
        , repeat(1)
        , shuffle(false)
        , stack_trace_depth(kMaxStackTraceDepth)
        , stream_result_to("")
        , throw_on_failure(false)
    {
    }

    // Factory methods.

    // Creates a Flags struct where the gtest_also_run_disabled_tests flag has
    // the given value.
    static Flags AlsoRunDisabledTests(bool also_run_disabled_tests)
    {
        Flags flags;
        flags.also_run_disabled_tests = also_run_disabled_tests;
        return flags;
    }

    // Creates a Flags struct where the gtest_break_on_failure flag has
    // the given value.
    static Flags BreakOnFailure(bool break_on_failure)
    {
        Flags flags;
        flags.break_on_failure = break_on_failure;
        return flags;
    }

    // Creates a Flags struct where the gtest_catch_exceptions flag has
    // the given value.
    static Flags CatchExceptions(bool catch_exceptions)
    {
        Flags flags;
        flags.catch_exceptions = catch_exceptions;
        return flags;
    }

    // Creates a Flags struct where the gtest_death_test_use_fork flag has
    // the given value.
    static Flags DeathTestUseFork(bool death_test_use_fork)
    {
        Flags flags;
        flags.death_test_use_fork = death_test_use_fork;
        return flags;
    }

    // Creates a Flags struct where the gtest_filter flag has the given
    // value.
    static Flags Filter(const char *filter)
    {
        Flags flags;
        flags.filter = filter;
        return flags;
    }

    // Creates a Flags struct where the gtest_list_tests flag has the
    // given value.
    static Flags ListTests(bool list_tests)
    {
        Flags flags;
        flags.list_tests = list_tests;
        return flags;
    }

    // Creates a Flags struct where the gtest_output flag has the given
    // value.
    static Flags Output(const char *output)
    {
        Flags flags;
        flags.output = output;
        return flags;
    }

    // Creates a Flags struct where the gtest_print_time flag has the given
    // value.
    static Flags PrintTime(bool print_time)
    {
        Flags flags;
        flags.print_time = print_time;
        return flags;
    }

    // Creates a Flags struct where the gtest_random_seed flag has the given
    // value.
    static Flags RandomSeed(Int32 random_seed)
    {
        Flags flags;
        flags.random_seed = random_seed;
        return flags;
    }

    // Creates a Flags struct where the gtest_repeat flag has the given
    // value.
    static Flags Repeat(Int32 repeat)
    {
        Flags flags;
        flags.repeat = repeat;
        return flags;
    }

    // Creates a Flags struct where the gtest_shuffle flag has the given
    // value.
    static Flags Shuffle(bool shuffle)
    {
        Flags flags;
        flags.shuffle = shuffle;
        return flags;
    }

    // Creates a Flags struct where the GTEST_FLAG(stack_trace_depth) flag has
    // the given value.
    static Flags StackTraceDepth(Int32 stack_trace_depth)
    {
        Flags flags;
        flags.stack_trace_depth = stack_trace_depth;
        return flags;
    }

    // Creates a Flags struct where the GTEST_FLAG(stream_result_to) flag has
    // the given value.
    static Flags StreamResultTo(const char *stream_result_to)
    {
        Flags flags;
        flags.stream_result_to = stream_result_to;
        return flags;
    }

    // Creates a Flags struct where the gtest_throw_on_failure flag has
    // the given value.
    static Flags ThrowOnFailure(bool throw_on_failure)
    {
        Flags flags;
        flags.throw_on_failure = throw_on_failure;
        return flags;
    }

    // These fields store the flag values.
    bool also_run_disabled_tests;
    bool break_on_failure;
    bool catch_exceptions;
    bool death_test_use_fork;
    const char *filter;
    bool list_tests;
    const char *output;
    bool print_time;
    Int32 random_seed;
    Int32 repeat;
    bool shuffle;
    Int32 stack_trace_depth;
    const char *stream_result_to;
    bool throw_on_failure;
};

// Fixture for testing ParseGoogleTestFlagsOnly().
class ParseFlagsTest : public Test
{
protected:
    // Clears the flags before each test.
    virtual void SetUp()
    {
        GTEST_FLAG(also_run_disabled_tests) = false;
        GTEST_FLAG(break_on_failure) = false;
        GTEST_FLAG(catch_exceptions) = false;
        GTEST_FLAG(death_test_use_fork) = false;
        GTEST_FLAG(filter) = "";
        GTEST_FLAG(list_tests) = false;
        GTEST_FLAG(output) = "";
        GTEST_FLAG(print_time) = true;
        GTEST_FLAG(random_seed) = 0;
        GTEST_FLAG(repeat) = 1;
        GTEST_FLAG(shuffle) = false;
        GTEST_FLAG(stack_trace_depth) = kMaxStackTraceDepth;
        GTEST_FLAG(stream_result_to) = "";
        GTEST_FLAG(throw_on_failure) = false;
    }

    // Asserts that two narrow or wide string arrays are equal.
    template<typename CharType>
    static void AssertStringArrayEq(size_t size1, CharType **array1,
                                    size_t size2, CharType **array2)
    {
        ASSERT_EQ(size1, size2) << " Array sizes different.";

        for (size_t i = 0; i != size1; i++) {
            ASSERT_STREQ(array1[i], array2[i]) << " where i == " << i;
        }
    }

    // Verifies that the flag values match the expected values.
    static void CheckFlags(const Flags &expected)
    {
        EXPECT_EQ(expected.also_run_disabled_tests,
                  GTEST_FLAG(also_run_disabled_tests));
        EXPECT_EQ(expected.break_on_failure, GTEST_FLAG(break_on_failure));
        EXPECT_EQ(expected.catch_exceptions, GTEST_FLAG(catch_exceptions));
        EXPECT_EQ(expected.death_test_use_fork, GTEST_FLAG(death_test_use_fork));
        EXPECT_STREQ(expected.filter, GTEST_FLAG(filter).c_str());
        EXPECT_EQ(expected.list_tests, GTEST_FLAG(list_tests));
        EXPECT_STREQ(expected.output, GTEST_FLAG(output).c_str());
        EXPECT_EQ(expected.print_time, GTEST_FLAG(print_time));
        EXPECT_EQ(expected.random_seed, GTEST_FLAG(random_seed));
        EXPECT_EQ(expected.repeat, GTEST_FLAG(repeat));
        EXPECT_EQ(expected.shuffle, GTEST_FLAG(shuffle));
        EXPECT_EQ(expected.stack_trace_depth, GTEST_FLAG(stack_trace_depth));
        EXPECT_STREQ(expected.stream_result_to,
                     GTEST_FLAG(stream_result_to).c_str());
        EXPECT_EQ(expected.throw_on_failure, GTEST_FLAG(throw_on_failure));
    }

    // Parses a command line (specified by argc1 and argv1), then
    // verifies that the flag values are expected and that the
    // recognized flags are removed from the command line.
    template<typename CharType>
    static void TestParsingFlags(int argc1, const CharType **argv1,
                                 int argc2, const CharType **argv2,
                                 const Flags &expected, bool should_print_help)
    {
        const bool saved_help_flag = ::testing::internal::g_help_flag;
        ::testing::internal::g_help_flag = false;

#if GTEST_HAS_STREAM_REDIRECTION
        CaptureStdout();
#endif

        // Parses the command line.
        internal::ParseGoogleTestFlagsOnly(&argc1, const_cast<CharType **>(argv1));

#if GTEST_HAS_STREAM_REDIRECTION
        const std::string captured_stdout = GetCapturedStdout();
#endif

        // Verifies the flag values.
        CheckFlags(expected);

        // Verifies that the recognized flags are removed from the command
        // line.
        AssertStringArrayEq(argc1 + 1, argv1, argc2 + 1, argv2);

        // ParseGoogleTestFlagsOnly should neither set g_help_flag nor print the
        // help message for the flags it recognizes.
        EXPECT_EQ(should_print_help, ::testing::internal::g_help_flag);

#if GTEST_HAS_STREAM_REDIRECTION
        const char *const expected_help_fragment =
            "This program contains tests written using";
        if (should_print_help) {
            EXPECT_PRED_FORMAT2(IsSubstring, expected_help_fragment, captured_stdout);
        } else {
            EXPECT_PRED_FORMAT2(IsNotSubstring,
                                expected_help_fragment, captured_stdout);
        }
#endif // GTEST_HAS_STREAM_REDIRECTION

        ::testing::internal::g_help_flag = saved_help_flag;
    }

    // This macro wraps TestParsingFlags s.t. the user doesn't need
    // to specify the array sizes.

#define GTEST_TEST_PARSING_FLAGS_(argv1, argv2, expected, should_print_help) \
    TestParsingFlags(sizeof(argv1) / sizeof(*argv1) - 1, argv1, \
                     sizeof(argv2) / sizeof(*argv2) - 1, argv2, \
                     expected, should_print_help)
};

// Tests parsing an empty command line.
TEST_F(ParseFlagsTest, Empty)
{
    const char *argv[] = {
        NULL};

    const char *argv2[] = {
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), false);
}

// Tests parsing a command line that has no flag.
TEST_F(ParseFlagsTest, NoFlag)
{
    const char *argv[] = {
        "foo.exe",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), false);
}

// Tests parsing a bad --gtest_filter flag.
TEST_F(ParseFlagsTest, FilterBad)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_filter",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        "--gtest_filter",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter(""), true);
}

// Tests parsing an empty --gtest_filter flag.
TEST_F(ParseFlagsTest, FilterEmpty)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_filter=",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter(""), false);
}

// Tests parsing a non-empty --gtest_filter flag.
TEST_F(ParseFlagsTest, FilterNonEmpty)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_filter=abc",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter("abc"), false);
}

// Tests parsing --gtest_break_on_failure.
TEST_F(ParseFlagsTest, BreakOnFailureWithoutValue)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_break_on_failure",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(true), false);
}

// Tests parsing --gtest_break_on_failure=0.
TEST_F(ParseFlagsTest, BreakOnFailureFalse_0)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_break_on_failure=0",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(false), false);
}

// Tests parsing --gtest_break_on_failure=f.
TEST_F(ParseFlagsTest, BreakOnFailureFalse_f)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_break_on_failure=f",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(false), false);
}

// Tests parsing --gtest_break_on_failure=F.
TEST_F(ParseFlagsTest, BreakOnFailureFalse_F)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_break_on_failure=F",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(false), false);
}

// Tests parsing a --gtest_break_on_failure flag that has a "true"
// definition.
TEST_F(ParseFlagsTest, BreakOnFailureTrue)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_break_on_failure=1",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(true), false);
}

// Tests parsing --gtest_catch_exceptions.
TEST_F(ParseFlagsTest, CatchExceptions)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_catch_exceptions",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::CatchExceptions(true), false);
}

// Tests parsing --gtest_death_test_use_fork.
TEST_F(ParseFlagsTest, DeathTestUseFork)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_death_test_use_fork",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::DeathTestUseFork(true), false);
}

// Tests having the same flag twice with different values.  The
// expected behavior is that the one coming last takes precedence.
TEST_F(ParseFlagsTest, DuplicatedFlags)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_filter=a",
        "--gtest_filter=b",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter("b"), false);
}

// Tests having an unrecognized flag on the command line.
TEST_F(ParseFlagsTest, UnrecognizedFlag)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_break_on_failure",
        "bar", // Unrecognized by Google Test.
        "--gtest_filter=b",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        "bar",
        NULL};

    Flags flags;
    flags.break_on_failure = true;
    flags.filter = "b";
    GTEST_TEST_PARSING_FLAGS_(argv, argv2, flags, false);
}

// Tests having a --gtest_list_tests flag
TEST_F(ParseFlagsTest, ListTestsFlag)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_list_tests",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(true), false);
}

// Tests having a --gtest_list_tests flag with a "true" value
TEST_F(ParseFlagsTest, ListTestsTrue)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_list_tests=1",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(true), false);
}

// Tests having a --gtest_list_tests flag with a "false" value
TEST_F(ParseFlagsTest, ListTestsFalse)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_list_tests=0",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
}

// Tests parsing --gtest_list_tests=f.
TEST_F(ParseFlagsTest, ListTestsFalse_f)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_list_tests=f",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
}

// Tests parsing --gtest_list_tests=F.
TEST_F(ParseFlagsTest, ListTestsFalse_F)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_list_tests=F",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
}

// Tests parsing --gtest_output (invalid).
TEST_F(ParseFlagsTest, OutputEmpty)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_output",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        "--gtest_output",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), true);
}

// Tests parsing --gtest_output=xml
TEST_F(ParseFlagsTest, OutputXml)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_output=xml",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Output("xml"), false);
}

// Tests parsing --gtest_output=xml:file
TEST_F(ParseFlagsTest, OutputXmlFile)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_output=xml:file",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Output("xml:file"), false);
}

// Tests parsing --gtest_output=xml:directory/path/
TEST_F(ParseFlagsTest, OutputXmlDirectory)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_output=xml:directory/path/",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2,
                              Flags::Output("xml:directory/path/"), false);
}

// Tests having a --gtest_print_time flag
TEST_F(ParseFlagsTest, PrintTimeFlag)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_print_time",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(true), false);
}

// Tests having a --gtest_print_time flag with a "true" value
TEST_F(ParseFlagsTest, PrintTimeTrue)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_print_time=1",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(true), false);
}

// Tests having a --gtest_print_time flag with a "false" value
TEST_F(ParseFlagsTest, PrintTimeFalse)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_print_time=0",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
}

// Tests parsing --gtest_print_time=f.
TEST_F(ParseFlagsTest, PrintTimeFalse_f)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_print_time=f",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
}

// Tests parsing --gtest_print_time=F.
TEST_F(ParseFlagsTest, PrintTimeFalse_F)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_print_time=F",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
}

// Tests parsing --gtest_random_seed=number
TEST_F(ParseFlagsTest, RandomSeed)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_random_seed=1000",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::RandomSeed(1000), false);
}

// Tests parsing --gtest_repeat=number
TEST_F(ParseFlagsTest, Repeat)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_repeat=1000",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Repeat(1000), false);
}

// Tests having a --gtest_also_run_disabled_tests flag
TEST_F(ParseFlagsTest, AlsoRunDisabledTestsFlag)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_also_run_disabled_tests",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2,
                              Flags::AlsoRunDisabledTests(true), false);
}

// Tests having a --gtest_also_run_disabled_tests flag with a "true" value
TEST_F(ParseFlagsTest, AlsoRunDisabledTestsTrue)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_also_run_disabled_tests=1",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2,
                              Flags::AlsoRunDisabledTests(true), false);
}

// Tests having a --gtest_also_run_disabled_tests flag with a "false" value
TEST_F(ParseFlagsTest, AlsoRunDisabledTestsFalse)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_also_run_disabled_tests=0",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2,
                              Flags::AlsoRunDisabledTests(false), false);
}

// Tests parsing --gtest_shuffle.
TEST_F(ParseFlagsTest, ShuffleWithoutValue)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_shuffle",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(true), false);
}

// Tests parsing --gtest_shuffle=0.
TEST_F(ParseFlagsTest, ShuffleFalse_0)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_shuffle=0",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(false), false);
}

// Tests parsing a --gtest_shuffle flag that has a "true" definition.
TEST_F(ParseFlagsTest, ShuffleTrue)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_shuffle=1",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(true), false);
}

// Tests parsing --gtest_stack_trace_depth=number.
TEST_F(ParseFlagsTest, StackTraceDepth)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_stack_trace_depth=5",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::StackTraceDepth(5), false);
}

TEST_F(ParseFlagsTest, StreamResultTo)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_stream_result_to=localhost:1234",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(
        argv, argv2, Flags::StreamResultTo("localhost:1234"), false);
}

// Tests parsing --gtest_throw_on_failure.
TEST_F(ParseFlagsTest, ThrowOnFailureWithoutValue)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_throw_on_failure",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ThrowOnFailure(true), false);
}

// Tests parsing --gtest_throw_on_failure=0.
TEST_F(ParseFlagsTest, ThrowOnFailureFalse_0)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_throw_on_failure=0",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ThrowOnFailure(false), false);
}

// Tests parsing a --gtest_throw_on_failure flag that has a "true"
// definition.
TEST_F(ParseFlagsTest, ThrowOnFailureTrue)
{
    const char *argv[] = {
        "foo.exe",
        "--gtest_throw_on_failure=1",
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ThrowOnFailure(true), false);
}

#if GTEST_OS_WINDOWS
// Tests parsing wide strings.
TEST_F(ParseFlagsTest, WideStrings)
{
    const wchar_t *argv[] = {
        L"foo.exe",
        L"--gtest_filter=Foo*",
        L"--gtest_list_tests=1",
        L"--gtest_break_on_failure",
        L"--non_gtest_flag",
        NULL};

    const wchar_t *argv2[] = {
        L"foo.exe",
        L"--non_gtest_flag",
        NULL};

    Flags expected_flags;
    expected_flags.break_on_failure = true;
    expected_flags.filter = "Foo*";
    expected_flags.list_tests = true;

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, expected_flags, false);
}
#endif // GTEST_OS_WINDOWS

#if GTEST_USE_OWN_FLAGFILE_FLAG_
class FlagfileTest : public ParseFlagsTest
{
public:
    virtual void SetUp()
    {
        ParseFlagsTest::SetUp();

        testdata_path_.Set(internal::FilePath(
            testing::TempDir() + internal::GetCurrentExecutableName().string() + "_flagfile_test"));
        testing::internal::posix::RmDir(testdata_path_.c_str());
        EXPECT_TRUE(testdata_path_.CreateFolder());
    }

    virtual void TearDown()
    {
        testing::internal::posix::RmDir(testdata_path_.c_str());
        ParseFlagsTest::TearDown();
    }

    internal::FilePath CreateFlagfile(const char *contents)
    {
        internal::FilePath file_path(internal::FilePath::GenerateUniqueFileName(
            testdata_path_, internal::FilePath("unique"), "txt"));
        FILE *f = testing::internal::posix::FOpen(file_path.c_str(), "w");
        fprintf(f, "%s", contents);
        fclose(f);
        return file_path;
    }

private:
    internal::FilePath testdata_path_;
};

// Tests an empty flagfile.
TEST_F(FlagfileTest, Empty)
{
    internal::FilePath flagfile_path(CreateFlagfile(""));
    std::string flagfile_flag =
        std::string("--" GTEST_FLAG_PREFIX_ "flagfile=") + flagfile_path.c_str();

    const char *argv[] = {
        "foo.exe",
        flagfile_flag.c_str(),
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), false);
}

// Tests passing a non-empty --gtest_filter flag via --gtest_flagfile.
TEST_F(FlagfileTest, FilterNonEmpty)
{
    internal::FilePath flagfile_path(CreateFlagfile(
        "--" GTEST_FLAG_PREFIX_ "filter=abc"));
    std::string flagfile_flag =
        std::string("--" GTEST_FLAG_PREFIX_ "flagfile=") + flagfile_path.c_str();

    const char *argv[] = {
        "foo.exe",
        flagfile_flag.c_str(),
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter("abc"), false);
}

// Tests passing several flags via --gtest_flagfile.
TEST_F(FlagfileTest, SeveralFlags)
{
    internal::FilePath flagfile_path(CreateFlagfile(
        "--" GTEST_FLAG_PREFIX_ "filter=abc\n"
        "--" GTEST_FLAG_PREFIX_ "break_on_failure\n"
        "--" GTEST_FLAG_PREFIX_ "list_tests"));
    std::string flagfile_flag =
        std::string("--" GTEST_FLAG_PREFIX_ "flagfile=") + flagfile_path.c_str();

    const char *argv[] = {
        "foo.exe",
        flagfile_flag.c_str(),
        NULL};

    const char *argv2[] = {
        "foo.exe",
        NULL};

    Flags expected_flags;
    expected_flags.break_on_failure = true;
    expected_flags.filter = "abc";
    expected_flags.list_tests = true;

    GTEST_TEST_PARSING_FLAGS_(argv, argv2, expected_flags, false);
}
#endif // GTEST_USE_OWN_FLAGFILE_FLAG_

// Tests current_test_info() in UnitTest.
class CurrentTestInfoTest : public Test
{
protected:
    // Tests that current_test_info() returns NULL before the first test in
    // the test case is run.
    static void SetUpTestCase()
    {
        // There should be no tests running at this point.
        const TestInfo *test_info =
            UnitTest::GetInstance()->current_test_info();
        EXPECT_TRUE(test_info == NULL)
            << "There should be no tests running at this point.";
    }

    // Tests that current_test_info() returns NULL after the last test in
    // the test case has run.
    static void TearDownTestCase()
    {
        const TestInfo *test_info =
            UnitTest::GetInstance()->current_test_info();
        EXPECT_TRUE(test_info == NULL)
            << "There should be no tests running at this point.";
    }
};

// Tests that current_test_info() returns TestInfo for currently running
// test by checking the expected test name against the actual one.
TEST_F(CurrentTestInfoTest, WorksForFirstTestInATestCase)
{
    const TestInfo *test_info =
        UnitTest::GetInstance()->current_test_info();
    ASSERT_TRUE(NULL != test_info)
        << "There is a test running so we should have a valid TestInfo.";
    EXPECT_STREQ("CurrentTestInfoTest", test_info->test_case_name())
        << "Expected the name of the currently running test case.";
    EXPECT_STREQ("WorksForFirstTestInATestCase", test_info->name())
        << "Expected the name of the currently running test.";
}

// Tests that current_test_info() returns TestInfo for currently running
// test by checking the expected test name against the actual one.  We
// use this test to see that the TestInfo object actually changed from
// the previous invocation.
TEST_F(CurrentTestInfoTest, WorksForSecondTestInATestCase)
{
    const TestInfo *test_info =
        UnitTest::GetInstance()->current_test_info();
    ASSERT_TRUE(NULL != test_info)
        << "There is a test running so we should have a valid TestInfo.";
    EXPECT_STREQ("CurrentTestInfoTest", test_info->test_case_name())
        << "Expected the name of the currently running test case.";
    EXPECT_STREQ("WorksForSecondTestInATestCase", test_info->name())
        << "Expected the name of the currently running test.";
}

} // namespace testing

// These two lines test that we can define tests in a namespace that
// has the name "testing" and is nested in another namespace.
namespace my_namespace {
namespace testing {

// Makes sure that TEST knows to use ::testing::Test instead of
// ::my_namespace::testing::Test.
class Test
{
};

// Makes sure that an assertion knows to use ::testing::Message instead of
// ::my_namespace::testing::Message.
class Message
{
};

// Makes sure that an assertion knows to use
// ::testing::AssertionResult instead of
// ::my_namespace::testing::AssertionResult.
class AssertionResult
{
};

// Tests that an assertion that should succeed works as expected.
TEST(NestedTestingNamespaceTest, Success)
{
    EXPECT_EQ(1, 1) << "This shouldn't fail.";
}

// Tests that an assertion that should fail works as expected.
TEST(NestedTestingNamespaceTest, Failure)
{
    EXPECT_FATAL_FAILURE(FAIL() << "This failure is expected.",
                         "This failure is expected.");
}

} // namespace testing
} // namespace my_namespace

// Tests that one can call superclass SetUp and TearDown methods--
// that is, that they are not private.
// No tests are based on this fixture; the test "passes" if it compiles
// successfully.
class ProtectedFixtureMethodsTest : public Test
{
protected:
    virtual void SetUp()
    {
        Test::SetUp();
    }
    virtual void TearDown()
    {
        Test::TearDown();
    }
};

// StreamingAssertionsTest tests the streaming versions of a representative
// sample of assertions.
TEST(StreamingAssertionsTest, Unconditional)
{
    SUCCEED() << "expected success";
    EXPECT_NONFATAL_FAILURE(ADD_FAILURE() << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(FAIL() << "expected failure",
                         "expected failure");
}

#ifdef __BORLANDC__
// Silences warnings: "Condition is always true", "Unreachable code"
#pragma option push -w-ccc -w-rch
#endif

TEST(StreamingAssertionsTest, Truth)
{
    EXPECT_TRUE(true) << "unexpected failure";
    ASSERT_TRUE(true) << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(false) << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_TRUE(false) << "expected failure",
                         "expected failure");
}

TEST(StreamingAssertionsTest, Truth2)
{
    EXPECT_FALSE(false) << "unexpected failure";
    ASSERT_FALSE(false) << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(true) << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_FALSE(true) << "expected failure",
                         "expected failure");
}

#ifdef __BORLANDC__
// Restores warnings after previous "#pragma option push" suppressed them
#pragma option pop
#endif

TEST(StreamingAssertionsTest, IntegerEquals)
{
    EXPECT_EQ(1, 1) << "unexpected failure";
    ASSERT_EQ(1, 1) << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_EQ(1, 2) << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_EQ(1, 2) << "expected failure",
                         "expected failure");
}

TEST(StreamingAssertionsTest, IntegerLessThan)
{
    EXPECT_LT(1, 2) << "unexpected failure";
    ASSERT_LT(1, 2) << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_LT(2, 1) << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_LT(2, 1) << "expected failure",
                         "expected failure");
}

TEST(StreamingAssertionsTest, StringsEqual)
{
    EXPECT_STREQ("foo", "foo") << "unexpected failure";
    ASSERT_STREQ("foo", "foo") << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_STREQ("foo", "bar") << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_STREQ("foo", "bar") << "expected failure",
                         "expected failure");
}

TEST(StreamingAssertionsTest, StringsNotEqual)
{
    EXPECT_STRNE("foo", "bar") << "unexpected failure";
    ASSERT_STRNE("foo", "bar") << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_STRNE("foo", "foo") << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_STRNE("foo", "foo") << "expected failure",
                         "expected failure");
}

TEST(StreamingAssertionsTest, StringsEqualIgnoringCase)
{
    EXPECT_STRCASEEQ("foo", "FOO") << "unexpected failure";
    ASSERT_STRCASEEQ("foo", "FOO") << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_STRCASEEQ("foo", "bar") << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_STRCASEEQ("foo", "bar") << "expected failure",
                         "expected failure");
}

TEST(StreamingAssertionsTest, StringNotEqualIgnoringCase)
{
    EXPECT_STRCASENE("foo", "bar") << "unexpected failure";
    ASSERT_STRCASENE("foo", "bar") << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_STRCASENE("foo", "FOO") << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_STRCASENE("bar", "BAR") << "expected failure",
                         "expected failure");
}

TEST(StreamingAssertionsTest, FloatingPointEquals)
{
    EXPECT_FLOAT_EQ(1.0, 1.0) << "unexpected failure";
    ASSERT_FLOAT_EQ(1.0, 1.0) << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(0.0, 1.0) << "expected failure",
                            "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_FLOAT_EQ(0.0, 1.0) << "expected failure",
                         "expected failure");
}

#if GTEST_HAS_EXCEPTIONS

TEST(StreamingAssertionsTest, Throw)
{
    EXPECT_THROW(ThrowAnInteger(), int) << "unexpected failure";
    ASSERT_THROW(ThrowAnInteger(), int) << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_THROW(ThrowAnInteger(), bool) << "expected failure", "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_THROW(ThrowAnInteger(), bool) << "expected failure", "expected failure");
}

TEST(StreamingAssertionsTest, NoThrow)
{
    EXPECT_NO_THROW(ThrowNothing()) << "unexpected failure";
    ASSERT_NO_THROW(ThrowNothing()) << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(ThrowAnInteger()) << "expected failure", "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_NO_THROW(ThrowAnInteger()) << "expected failure", "expected failure");
}

TEST(StreamingAssertionsTest, AnyThrow)
{
    EXPECT_ANY_THROW(ThrowAnInteger()) << "unexpected failure";
    ASSERT_ANY_THROW(ThrowAnInteger()) << "unexpected failure";
    EXPECT_NONFATAL_FAILURE(EXPECT_ANY_THROW(ThrowNothing()) << "expected failure", "expected failure");
    EXPECT_FATAL_FAILURE(ASSERT_ANY_THROW(ThrowNothing()) << "expected failure", "expected failure");
}

#endif // GTEST_HAS_EXCEPTIONS

// Tests that Google Test correctly decides whether to use colors in the output.

TEST(ColoredOutputTest, UsesColorsWhenGTestColorFlagIsYes)
{
    GTEST_FLAG(color) = "yes";

    SetEnv("TERM", "xterm"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.
    EXPECT_TRUE(ShouldUseColor(false)); // Stdout is not a TTY.

    SetEnv("TERM", "dumb"); // TERM doesn't support colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.
    EXPECT_TRUE(ShouldUseColor(false)); // Stdout is not a TTY.
}

TEST(ColoredOutputTest, UsesColorsWhenGTestColorFlagIsAliasOfYes)
{
    SetEnv("TERM", "dumb"); // TERM doesn't support colors.

    GTEST_FLAG(color) = "True";
    EXPECT_TRUE(ShouldUseColor(false)); // Stdout is not a TTY.

    GTEST_FLAG(color) = "t";
    EXPECT_TRUE(ShouldUseColor(false)); // Stdout is not a TTY.

    GTEST_FLAG(color) = "1";
    EXPECT_TRUE(ShouldUseColor(false)); // Stdout is not a TTY.
}

TEST(ColoredOutputTest, UsesNoColorWhenGTestColorFlagIsNo)
{
    GTEST_FLAG(color) = "no";

    SetEnv("TERM", "xterm"); // TERM supports colors.
    EXPECT_FALSE(ShouldUseColor(true)); // Stdout is a TTY.
    EXPECT_FALSE(ShouldUseColor(false)); // Stdout is not a TTY.

    SetEnv("TERM", "dumb"); // TERM doesn't support colors.
    EXPECT_FALSE(ShouldUseColor(true)); // Stdout is a TTY.
    EXPECT_FALSE(ShouldUseColor(false)); // Stdout is not a TTY.
}

TEST(ColoredOutputTest, UsesNoColorWhenGTestColorFlagIsInvalid)
{
    SetEnv("TERM", "xterm"); // TERM supports colors.

    GTEST_FLAG(color) = "F";
    EXPECT_FALSE(ShouldUseColor(true)); // Stdout is a TTY.

    GTEST_FLAG(color) = "0";
    EXPECT_FALSE(ShouldUseColor(true)); // Stdout is a TTY.

    GTEST_FLAG(color) = "unknown";
    EXPECT_FALSE(ShouldUseColor(true)); // Stdout is a TTY.
}

TEST(ColoredOutputTest, UsesColorsWhenStdoutIsTty)
{
    GTEST_FLAG(color) = "auto";

    SetEnv("TERM", "xterm"); // TERM supports colors.
    EXPECT_FALSE(ShouldUseColor(false)); // Stdout is not a TTY.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.
}

TEST(ColoredOutputTest, UsesColorsWhenTermSupportsColors)
{
    GTEST_FLAG(color) = "auto";

#if GTEST_OS_WINDOWS
    // On Windows, we ignore the TERM variable as it's usually not set.

    SetEnv("TERM", "dumb");
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "");
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "xterm");
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.
#else
    // On non-Windows platforms, we rely on TERM to determine if the
    // terminal supports colors.

    SetEnv("TERM", "dumb"); // TERM doesn't support colors.
    EXPECT_FALSE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "emacs"); // TERM doesn't support colors.
    EXPECT_FALSE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "vt100"); // TERM doesn't support colors.
    EXPECT_FALSE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "xterm-mono"); // TERM doesn't support colors.
    EXPECT_FALSE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "xterm"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "xterm-color"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "xterm-256color"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "screen"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "screen-256color"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "tmux"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "tmux-256color"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "rxvt-unicode"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "rxvt-unicode-256color"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "linux"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.

    SetEnv("TERM", "cygwin"); // TERM supports colors.
    EXPECT_TRUE(ShouldUseColor(true)); // Stdout is a TTY.
#endif // GTEST_OS_WINDOWS
}

// Verifies that StaticAssertTypeEq works in a namespace scope.

static bool dummy1 GTEST_ATTRIBUTE_UNUSED_ = StaticAssertTypeEq<bool, bool>();
static bool dummy2 GTEST_ATTRIBUTE_UNUSED_ =
    StaticAssertTypeEq<const int, const int>();

// Verifies that StaticAssertTypeEq works in a class.

template<typename T>
class StaticAssertTypeEqTestHelper
{
public:
    StaticAssertTypeEqTestHelper() { StaticAssertTypeEq<bool, T>(); }
};

TEST(StaticAssertTypeEqTest, WorksInClass)
{
    StaticAssertTypeEqTestHelper<bool>();
}

// Verifies that StaticAssertTypeEq works inside a function.

typedef int IntAlias;

TEST(StaticAssertTypeEqTest, CompilesForEqualTypes)
{
    StaticAssertTypeEq<int, IntAlias>();
    StaticAssertTypeEq<int *, IntAlias *>();
}

TEST(HasNonfatalFailureTest, ReturnsFalseWhenThereIsNoFailure)
{
    EXPECT_FALSE(HasNonfatalFailure());
}

static void FailFatally()
{
    FAIL();
}

TEST(HasNonfatalFailureTest, ReturnsFalseWhenThereIsOnlyFatalFailure)
{
    FailFatally();
    const bool has_nonfatal_failure = HasNonfatalFailure();
    ClearCurrentTestPartResults();
    EXPECT_FALSE(has_nonfatal_failure);
}

TEST(HasNonfatalFailureTest, ReturnsTrueWhenThereIsNonfatalFailure)
{
    ADD_FAILURE();
    const bool has_nonfatal_failure = HasNonfatalFailure();
    ClearCurrentTestPartResults();
    EXPECT_TRUE(has_nonfatal_failure);
}

TEST(HasNonfatalFailureTest, ReturnsTrueWhenThereAreFatalAndNonfatalFailures)
{
    FailFatally();
    ADD_FAILURE();
    const bool has_nonfatal_failure = HasNonfatalFailure();
    ClearCurrentTestPartResults();
    EXPECT_TRUE(has_nonfatal_failure);
}

// A wrapper for calling HasNonfatalFailure outside of a test body.
static bool HasNonfatalFailureHelper()
{
    return testing::Test::HasNonfatalFailure();
}

TEST(HasNonfatalFailureTest, WorksOutsideOfTestBody)
{
    EXPECT_FALSE(HasNonfatalFailureHelper());
}

TEST(HasNonfatalFailureTest, WorksOutsideOfTestBody2)
{
    ADD_FAILURE();
    const bool has_nonfatal_failure = HasNonfatalFailureHelper();
    ClearCurrentTestPartResults();
    EXPECT_TRUE(has_nonfatal_failure);
}

TEST(HasFailureTest, ReturnsFalseWhenThereIsNoFailure)
{
    EXPECT_FALSE(HasFailure());
}

TEST(HasFailureTest, ReturnsTrueWhenThereIsFatalFailure)
{
    FailFatally();
    const bool has_failure = HasFailure();
    ClearCurrentTestPartResults();
    EXPECT_TRUE(has_failure);
}

TEST(HasFailureTest, ReturnsTrueWhenThereIsNonfatalFailure)
{
    ADD_FAILURE();
    const bool has_failure = HasFailure();
    ClearCurrentTestPartResults();
    EXPECT_TRUE(has_failure);
}

TEST(HasFailureTest, ReturnsTrueWhenThereAreFatalAndNonfatalFailures)
{
    FailFatally();
    ADD_FAILURE();
    const bool has_failure = HasFailure();
    ClearCurrentTestPartResults();
    EXPECT_TRUE(has_failure);
}

// A wrapper for calling HasFailure outside of a test body.
static bool HasFailureHelper()
{
    return testing::Test::HasFailure();
}

TEST(HasFailureTest, WorksOutsideOfTestBody)
{
    EXPECT_FALSE(HasFailureHelper());
}

TEST(HasFailureTest, WorksOutsideOfTestBody2)
{
    ADD_FAILURE();
    const bool has_failure = HasFailureHelper();
    ClearCurrentTestPartResults();
    EXPECT_TRUE(has_failure);
}

class TestListener : public EmptyTestEventListener
{
public:
    TestListener()
        : on_start_counter_(NULL)
        , is_destroyed_(NULL)
    {
    }
    TestListener(int *on_start_counter, bool *is_destroyed)
        : on_start_counter_(on_start_counter)
        , is_destroyed_(is_destroyed)
    {
    }

    virtual ~TestListener()
    {
        if (is_destroyed_)
            *is_destroyed_ = true;
    }

protected:
    virtual void OnTestProgramStart(const UnitTest & /*unit_test*/)
    {
        if (on_start_counter_ != NULL)
            (*on_start_counter_)++;
    }

private:
    int *on_start_counter_;
    bool *is_destroyed_;
};

// Tests the constructor.
TEST(TestEventListenersTest, ConstructionWorks)
{
    TestEventListeners listeners;

    EXPECT_TRUE(TestEventListenersAccessor::GetRepeater(&listeners) != NULL);
    EXPECT_TRUE(listeners.default_result_printer() == NULL);
    EXPECT_TRUE(listeners.default_xml_generator() == NULL);
}

// Tests that the TestEventListeners destructor deletes all the listeners it
// owns.
TEST(TestEventListenersTest, DestructionWorks)
{
    bool default_result_printer_is_destroyed = false;
    bool default_xml_printer_is_destroyed = false;
    bool extra_listener_is_destroyed = false;
    TestListener *default_result_printer = new TestListener(
        NULL, &default_result_printer_is_destroyed);
    TestListener *default_xml_printer = new TestListener(
        NULL, &default_xml_printer_is_destroyed);
    TestListener *extra_listener = new TestListener(
        NULL, &extra_listener_is_destroyed);

    {
        TestEventListeners listeners;
        TestEventListenersAccessor::SetDefaultResultPrinter(&listeners,
                                                            default_result_printer);
        TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners,
                                                           default_xml_printer);
        listeners.Append(extra_listener);
    }
    EXPECT_TRUE(default_result_printer_is_destroyed);
    EXPECT_TRUE(default_xml_printer_is_destroyed);
    EXPECT_TRUE(extra_listener_is_destroyed);
}

// Tests that a listener Append'ed to a TestEventListeners list starts
// receiving events.
TEST(TestEventListenersTest, Append)
{
    int on_start_counter = 0;
    bool is_destroyed = false;
    TestListener *listener = new TestListener(&on_start_counter, &is_destroyed);
    {
        TestEventListeners listeners;
        listeners.Append(listener);
        TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());
        EXPECT_EQ(1, on_start_counter);
    }
    EXPECT_TRUE(is_destroyed);
}

// Tests that listeners receive events in the order they were appended to
// the list, except for *End requests, which must be received in the reverse
// order.
class SequenceTestingListener : public EmptyTestEventListener
{
public:
    SequenceTestingListener(std::vector<std::string> *vector, const char *id)
        : vector_(vector)
        , id_(id)
    {
    }

protected:
    virtual void OnTestProgramStart(const UnitTest & /*unit_test*/)
    {
        vector_->push_back(GetEventDescription("OnTestProgramStart"));
    }

    virtual void OnTestProgramEnd(const UnitTest & /*unit_test*/)
    {
        vector_->push_back(GetEventDescription("OnTestProgramEnd"));
    }

    virtual void OnTestIterationStart(const UnitTest & /*unit_test*/,
                                      int /*iteration*/)
    {
        vector_->push_back(GetEventDescription("OnTestIterationStart"));
    }

    virtual void OnTestIterationEnd(const UnitTest & /*unit_test*/,
                                    int /*iteration*/)
    {
        vector_->push_back(GetEventDescription("OnTestIterationEnd"));
    }

private:
    std::string GetEventDescription(const char *method)
    {
        Message message;
        message << id_ << "." << method;
        return message.GetString();
    }

    std::vector<std::string> *vector_;
    const char *const id_;

    GTEST_DISALLOW_COPY_AND_ASSIGN_(SequenceTestingListener);
};

TEST(EventListenerTest, AppendKeepsOrder)
{
    std::vector<std::string> vec;
    TestEventListeners listeners;
    listeners.Append(new SequenceTestingListener(&vec, "1st"));
    listeners.Append(new SequenceTestingListener(&vec, "2nd"));
    listeners.Append(new SequenceTestingListener(&vec, "3rd"));

    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());
    ASSERT_EQ(3U, vec.size());
    EXPECT_STREQ("1st.OnTestProgramStart", vec[0].c_str());
    EXPECT_STREQ("2nd.OnTestProgramStart", vec[1].c_str());
    EXPECT_STREQ("3rd.OnTestProgramStart", vec[2].c_str());

    vec.clear();
    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramEnd(*UnitTest::GetInstance());
    ASSERT_EQ(3U, vec.size());
    EXPECT_STREQ("3rd.OnTestProgramEnd", vec[0].c_str());
    EXPECT_STREQ("2nd.OnTestProgramEnd", vec[1].c_str());
    EXPECT_STREQ("1st.OnTestProgramEnd", vec[2].c_str());

    vec.clear();
    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestIterationStart(*UnitTest::GetInstance(), 0);
    ASSERT_EQ(3U, vec.size());
    EXPECT_STREQ("1st.OnTestIterationStart", vec[0].c_str());
    EXPECT_STREQ("2nd.OnTestIterationStart", vec[1].c_str());
    EXPECT_STREQ("3rd.OnTestIterationStart", vec[2].c_str());

    vec.clear();
    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestIterationEnd(*UnitTest::GetInstance(), 0);
    ASSERT_EQ(3U, vec.size());
    EXPECT_STREQ("3rd.OnTestIterationEnd", vec[0].c_str());
    EXPECT_STREQ("2nd.OnTestIterationEnd", vec[1].c_str());
    EXPECT_STREQ("1st.OnTestIterationEnd", vec[2].c_str());
}

// Tests that a listener removed from a TestEventListeners list stops receiving
// events and is not deleted when the list is destroyed.
TEST(TestEventListenersTest, Release)
{
    int on_start_counter = 0;
    bool is_destroyed = false;
    // Although Append passes the ownership of this object to the list,
    // the following calls release it, and we need to delete it before the
    // test ends.
    TestListener *listener = new TestListener(&on_start_counter, &is_destroyed);
    {
        TestEventListeners listeners;
        listeners.Append(listener);
        EXPECT_EQ(listener, listeners.Release(listener));
        TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());
        EXPECT_TRUE(listeners.Release(listener) == NULL);
    }
    EXPECT_EQ(0, on_start_counter);
    EXPECT_FALSE(is_destroyed);
    delete listener;
}

// Tests that no events are forwarded when event forwarding is disabled.
TEST(EventListenerTest, SuppressEventForwarding)
{
    int on_start_counter = 0;
    TestListener *listener = new TestListener(&on_start_counter, NULL);

    TestEventListeners listeners;
    listeners.Append(listener);
    ASSERT_TRUE(TestEventListenersAccessor::EventForwardingEnabled(listeners));
    TestEventListenersAccessor::SuppressEventForwarding(&listeners);
    ASSERT_FALSE(TestEventListenersAccessor::EventForwardingEnabled(listeners));
    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());
    EXPECT_EQ(0, on_start_counter);
}

// Tests that events generated by Google Test are not forwarded in
// death test subprocesses.
TEST(EventListenerDeathTest, EventsNotForwardedInDeathTestSubprecesses)
{
    EXPECT_DEATH_IF_SUPPORTED({ GTEST_CHECK_(TestEventListenersAccessor::EventForwardingEnabled(
                                    *GetUnitTestImpl()->listeners()))
                                    << "expected failure"; },
                              "expected failure");
}

// Tests that a listener installed via SetDefaultResultPrinter() starts
// receiving events and is returned via default_result_printer() and that
// the previous default_result_printer is removed from the list and deleted.
TEST(EventListenerTest, default_result_printer)
{
    int on_start_counter = 0;
    bool is_destroyed = false;
    TestListener *listener = new TestListener(&on_start_counter, &is_destroyed);

    TestEventListeners listeners;
    TestEventListenersAccessor::SetDefaultResultPrinter(&listeners, listener);

    EXPECT_EQ(listener, listeners.default_result_printer());

    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());

    EXPECT_EQ(1, on_start_counter);

    // Replacing default_result_printer with something else should remove it
    // from the list and destroy it.
    TestEventListenersAccessor::SetDefaultResultPrinter(&listeners, NULL);

    EXPECT_TRUE(listeners.default_result_printer() == NULL);
    EXPECT_TRUE(is_destroyed);

    // After broadcasting an event the counter is still the same, indicating
    // the listener is not in the list anymore.
    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());
    EXPECT_EQ(1, on_start_counter);
}

// Tests that the default_result_printer listener stops receiving events
// when removed via Release and that is not owned by the list anymore.
TEST(EventListenerTest, RemovingDefaultResultPrinterWorks)
{
    int on_start_counter = 0;
    bool is_destroyed = false;
    // Although Append passes the ownership of this object to the list,
    // the following calls release it, and we need to delete it before the
    // test ends.
    TestListener *listener = new TestListener(&on_start_counter, &is_destroyed);
    {
        TestEventListeners listeners;
        TestEventListenersAccessor::SetDefaultResultPrinter(&listeners, listener);

        EXPECT_EQ(listener, listeners.Release(listener));
        EXPECT_TRUE(listeners.default_result_printer() == NULL);
        EXPECT_FALSE(is_destroyed);

        // Broadcasting events now should not affect default_result_printer.
        TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());
        EXPECT_EQ(0, on_start_counter);
    }
    // Destroying the list should not affect the listener now, too.
    EXPECT_FALSE(is_destroyed);
    delete listener;
}

// Tests that a listener installed via SetDefaultXmlGenerator() starts
// receiving events and is returned via default_xml_generator() and that
// the previous default_xml_generator is removed from the list and deleted.
TEST(EventListenerTest, default_xml_generator)
{
    int on_start_counter = 0;
    bool is_destroyed = false;
    TestListener *listener = new TestListener(&on_start_counter, &is_destroyed);

    TestEventListeners listeners;
    TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners, listener);

    EXPECT_EQ(listener, listeners.default_xml_generator());

    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());

    EXPECT_EQ(1, on_start_counter);

    // Replacing default_xml_generator with something else should remove it
    // from the list and destroy it.
    TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners, NULL);

    EXPECT_TRUE(listeners.default_xml_generator() == NULL);
    EXPECT_TRUE(is_destroyed);

    // After broadcasting an event the counter is still the same, indicating
    // the listener is not in the list anymore.
    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());
    EXPECT_EQ(1, on_start_counter);
}

// Tests that the default_xml_generator listener stops receiving events
// when removed via Release and that is not owned by the list anymore.
TEST(EventListenerTest, RemovingDefaultXmlGeneratorWorks)
{
    int on_start_counter = 0;
    bool is_destroyed = false;
    // Although Append passes the ownership of this object to the list,
    // the following calls release it, and we need to delete it before the
    // test ends.
    TestListener *listener = new TestListener(&on_start_counter, &is_destroyed);
    {
        TestEventListeners listeners;
        TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners, listener);

        EXPECT_EQ(listener, listeners.Release(listener));
        EXPECT_TRUE(listeners.default_xml_generator() == NULL);
        EXPECT_FALSE(is_destroyed);

        // Broadcasting events now should not affect default_xml_generator.
        TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(*UnitTest::GetInstance());
        EXPECT_EQ(0, on_start_counter);
    }
    // Destroying the list should not affect the listener now, too.
    EXPECT_FALSE(is_destroyed);
    delete listener;
}

// Sanity tests to ensure that the alternative, verbose spellings of
// some of the macros work.  We don't test them thoroughly as that
// would be quite involved.  Since their implementations are
// straightforward, and they are rarely used, we'll just rely on the
// users to tell us when they are broken.
GTEST_TEST(AlternativeNameTest, Works)
{ // GTEST_TEST is the same as TEST.
    GTEST_SUCCEED() << "OK"; // GTEST_SUCCEED is the same as SUCCEED.

    // GTEST_FAIL is the same as FAIL.
    EXPECT_FATAL_FAILURE(GTEST_FAIL() << "An expected failure",
                         "An expected failure");

    // GTEST_ASSERT_XY is the same as ASSERT_XY.

    GTEST_ASSERT_EQ(0, 0);
    EXPECT_FATAL_FAILURE(GTEST_ASSERT_EQ(0, 1) << "An expected failure",
                         "An expected failure");
    EXPECT_FATAL_FAILURE(GTEST_ASSERT_EQ(1, 0) << "An expected failure",
                         "An expected failure");

    GTEST_ASSERT_NE(0, 1);
    GTEST_ASSERT_NE(1, 0);
    EXPECT_FATAL_FAILURE(GTEST_ASSERT_NE(0, 0) << "An expected failure",
                         "An expected failure");

    GTEST_ASSERT_LE(0, 0);
    GTEST_ASSERT_LE(0, 1);
    EXPECT_FATAL_FAILURE(GTEST_ASSERT_LE(1, 0) << "An expected failure",
                         "An expected failure");

    GTEST_ASSERT_LT(0, 1);
    EXPECT_FATAL_FAILURE(GTEST_ASSERT_LT(0, 0) << "An expected failure",
                         "An expected failure");
    EXPECT_FATAL_FAILURE(GTEST_ASSERT_LT(1, 0) << "An expected failure",
                         "An expected failure");

    GTEST_ASSERT_GE(0, 0);
    GTEST_ASSERT_GE(1, 0);
    EXPECT_FATAL_FAILURE(GTEST_ASSERT_GE(0, 1) << "An expected failure",
                         "An expected failure");

    GTEST_ASSERT_GT(1, 0);
    EXPECT_FATAL_FAILURE(GTEST_ASSERT_GT(0, 1) << "An expected failure",
                         "An expected failure");
    EXPECT_FATAL_FAILURE(GTEST_ASSERT_GT(1, 1) << "An expected failure",
                         "An expected failure");
}

// Tests for internal utilities necessary for implementation of the universal
// printing.
// FIXME: Find a better home for them.

class ConversionHelperBase
{
};
class ConversionHelperDerived : public ConversionHelperBase
{
};

// Tests that IsAProtocolMessage<T>::value is a compile-time constant.
TEST(IsAProtocolMessageTest, ValueIsCompileTimeConstant)
{
    GTEST_COMPILE_ASSERT_(IsAProtocolMessage<ProtocolMessage>::value,
                          const_true);
    GTEST_COMPILE_ASSERT_(!IsAProtocolMessage<int>::value, const_false);
}

// Tests that IsAProtocolMessage<T>::value is true when T is
// proto2::Message or a sub-class of it.
TEST(IsAProtocolMessageTest, ValueIsTrueWhenTypeIsAProtocolMessage)
{
    EXPECT_TRUE(IsAProtocolMessage<::proto2::Message>::value);
    EXPECT_TRUE(IsAProtocolMessage<ProtocolMessage>::value);
}

// Tests that IsAProtocolMessage<T>::value is false when T is neither
// ProtocolMessage nor a sub-class of it.
TEST(IsAProtocolMessageTest, ValueIsFalseWhenTypeIsNotAProtocolMessage)
{
    EXPECT_FALSE(IsAProtocolMessage<int>::value);
    EXPECT_FALSE(IsAProtocolMessage<const ConversionHelperBase>::value);
}

// Tests that CompileAssertTypesEqual compiles when the type arguments are
// equal.
TEST(CompileAssertTypesEqual, CompilesWhenTypesAreEqual)
{
    CompileAssertTypesEqual<void, void>();
    CompileAssertTypesEqual<int *, int *>();
}

// Tests that RemoveReference does not affect non-reference types.
TEST(RemoveReferenceTest, DoesNotAffectNonReferenceType)
{
    CompileAssertTypesEqual<int, RemoveReference<int>::type>();
    CompileAssertTypesEqual<const char, RemoveReference<const char>::type>();
}

// Tests that RemoveReference removes reference from reference types.
TEST(RemoveReferenceTest, RemovesReference)
{
    CompileAssertTypesEqual<int, RemoveReference<int &>::type>();
    CompileAssertTypesEqual<const char, RemoveReference<const char &>::type>();
}

// Tests GTEST_REMOVE_REFERENCE_.

template<typename T1, typename T2>
void TestGTestRemoveReference()
{
    CompileAssertTypesEqual<T1, GTEST_REMOVE_REFERENCE_(T2)>();
}

TEST(RemoveReferenceTest, MacroVersion)
{
    TestGTestRemoveReference<int, int>();
    TestGTestRemoveReference<const char, const char &>();
}

// Tests that RemoveConst does not affect non-const types.
TEST(RemoveConstTest, DoesNotAffectNonConstType)
{
    CompileAssertTypesEqual<int, RemoveConst<int>::type>();
    CompileAssertTypesEqual<char &, RemoveConst<char &>::type>();
}

// Tests that RemoveConst removes const from const types.
TEST(RemoveConstTest, RemovesConst)
{
    CompileAssertTypesEqual<int, RemoveConst<const int>::type>();
    CompileAssertTypesEqual<char[2], RemoveConst<const char[2]>::type>();
    CompileAssertTypesEqual<char[2][3], RemoveConst<const char[2][3]>::type>();
}

// Tests GTEST_REMOVE_CONST_.

template<typename T1, typename T2>
void TestGTestRemoveConst()
{
    CompileAssertTypesEqual<T1, GTEST_REMOVE_CONST_(T2)>();
}

TEST(RemoveConstTest, MacroVersion)
{
    TestGTestRemoveConst<int, int>();
    TestGTestRemoveConst<double &, double &>();
    TestGTestRemoveConst<char, const char>();
}

// Tests GTEST_REMOVE_REFERENCE_AND_CONST_.

template<typename T1, typename T2>
void TestGTestRemoveReferenceAndConst()
{
    CompileAssertTypesEqual<T1, GTEST_REMOVE_REFERENCE_AND_CONST_(T2)>();
}

TEST(RemoveReferenceToConstTest, Works)
{
    TestGTestRemoveReferenceAndConst<int, int>();
    TestGTestRemoveReferenceAndConst<double, double &>();
    TestGTestRemoveReferenceAndConst<char, const char>();
    TestGTestRemoveReferenceAndConst<char, const char &>();
    TestGTestRemoveReferenceAndConst<const char *, const char *>();
}

// Tests that AddReference does not affect reference types.
TEST(AddReferenceTest, DoesNotAffectReferenceType)
{
    CompileAssertTypesEqual<int &, AddReference<int &>::type>();
    CompileAssertTypesEqual<const char &, AddReference<const char &>::type>();
}

// Tests that AddReference adds reference to non-reference types.
TEST(AddReferenceTest, AddsReference)
{
    CompileAssertTypesEqual<int &, AddReference<int>::type>();
    CompileAssertTypesEqual<const char &, AddReference<const char>::type>();
}

// Tests GTEST_ADD_REFERENCE_.

template<typename T1, typename T2>
void TestGTestAddReference()
{
    CompileAssertTypesEqual<T1, GTEST_ADD_REFERENCE_(T2)>();
}

TEST(AddReferenceTest, MacroVersion)
{
    TestGTestAddReference<int &, int>();
    TestGTestAddReference<const char &, const char &>();
}

// Tests GTEST_REFERENCE_TO_CONST_.

template<typename T1, typename T2>
void TestGTestReferenceToConst()
{
    CompileAssertTypesEqual<T1, GTEST_REFERENCE_TO_CONST_(T2)>();
}

TEST(GTestReferenceToConstTest, Works)
{
    TestGTestReferenceToConst<const char &, char>();
    TestGTestReferenceToConst<const int &, const int>();
    TestGTestReferenceToConst<const double &, double>();
    TestGTestReferenceToConst<const std::string &, const std::string &>();
}

// Tests that ImplicitlyConvertible<T1, T2>::value is a compile-time constant.
TEST(ImplicitlyConvertibleTest, ValueIsCompileTimeConstant)
{
    GTEST_COMPILE_ASSERT_((ImplicitlyConvertible<int, int>::value), const_true);
    GTEST_COMPILE_ASSERT_((!ImplicitlyConvertible<void *, int *>::value),
                          const_false);
}

// Tests that ImplicitlyConvertible<T1, T2>::value is true when T1 can
// be implicitly converted to T2.
TEST(ImplicitlyConvertibleTest, ValueIsTrueWhenConvertible)
{
    EXPECT_TRUE((ImplicitlyConvertible<int, double>::value));
    EXPECT_TRUE((ImplicitlyConvertible<double, int>::value));
    EXPECT_TRUE((ImplicitlyConvertible<int *, void *>::value));
    EXPECT_TRUE((ImplicitlyConvertible<int *, const int *>::value));
    EXPECT_TRUE((ImplicitlyConvertible<ConversionHelperDerived &,
                                       const ConversionHelperBase &>::value));
    EXPECT_TRUE((ImplicitlyConvertible<const ConversionHelperBase,
                                       ConversionHelperBase>::value));
}

// Tests that ImplicitlyConvertible<T1, T2>::value is false when T1
// cannot be implicitly converted to T2.
TEST(ImplicitlyConvertibleTest, ValueIsFalseWhenNotConvertible)
{
    EXPECT_FALSE((ImplicitlyConvertible<double, int *>::value));
    EXPECT_FALSE((ImplicitlyConvertible<void *, int *>::value));
    EXPECT_FALSE((ImplicitlyConvertible<const int *, int *>::value));
    EXPECT_FALSE((ImplicitlyConvertible<ConversionHelperBase &,
                                        ConversionHelperDerived &>::value));
}

// Tests IsContainerTest.

class NonContainer
{
};

TEST(IsContainerTestTest, WorksForNonContainer)
{
    EXPECT_EQ(sizeof(IsNotContainer), sizeof(IsContainerTest<int>(0)));
    EXPECT_EQ(sizeof(IsNotContainer), sizeof(IsContainerTest<char[5]>(0)));
    EXPECT_EQ(sizeof(IsNotContainer), sizeof(IsContainerTest<NonContainer>(0)));
}

TEST(IsContainerTestTest, WorksForContainer)
{
    EXPECT_EQ(sizeof(IsContainer),
              sizeof(IsContainerTest<std::vector<bool>>(0)));
    EXPECT_EQ(sizeof(IsContainer),
              sizeof(IsContainerTest<std::map<int, double>>(0)));
}

#if GTEST_LANG_CXX11
struct ConstOnlyContainerWithPointerIterator {
    using const_iterator = int *;
    const_iterator begin() const;
    const_iterator end() const;
};

struct ConstOnlyContainerWithClassIterator {
    struct const_iterator {
        const int &operator*() const;
        const_iterator &operator++(/* pre-increment */);
    };
    const_iterator begin() const;
    const_iterator end() const;
};

TEST(IsContainerTestTest, ConstOnlyContainer)
{
    EXPECT_EQ(sizeof(IsContainer),
              sizeof(IsContainerTest<ConstOnlyContainerWithPointerIterator>(0)));
    EXPECT_EQ(sizeof(IsContainer),
              sizeof(IsContainerTest<ConstOnlyContainerWithClassIterator>(0)));
}
#endif // GTEST_LANG_CXX11

// Tests IsHashTable.
struct AHashTable {
    typedef void hasher;
};
struct NotReallyAHashTable {
    typedef void hasher;
    typedef void reverse_iterator;
};
TEST(IsHashTable, Basic)
{
    EXPECT_TRUE(testing::internal::IsHashTable<AHashTable>::value);
    EXPECT_FALSE(testing::internal::IsHashTable<NotReallyAHashTable>::value);
#if GTEST_LANG_CXX11
    EXPECT_FALSE(testing::internal::IsHashTable<std::vector<int>>::value);
    EXPECT_TRUE(testing::internal::IsHashTable<std::unordered_set<int>>::value);
#endif // GTEST_LANG_CXX11
#if GTEST_HAS_HASH_SET_
    EXPECT_TRUE(testing::internal::IsHashTable<__gnu_cxx::hash_set<int>>::value);
#endif // GTEST_HAS_HASH_SET_
}

// Tests ArrayEq().

TEST(ArrayEqTest, WorksForDegeneratedArrays)
{
    EXPECT_TRUE(ArrayEq(5, 5L));
    EXPECT_FALSE(ArrayEq('a', 0));
}

TEST(ArrayEqTest, WorksForOneDimensionalArrays)
{
    // Note that a and b are distinct but compatible types.
    const int a[] = {0, 1};
    long b[] = {0, 1};
    EXPECT_TRUE(ArrayEq(a, b));
    EXPECT_TRUE(ArrayEq(a, 2, b));

    b[0] = 2;
    EXPECT_FALSE(ArrayEq(a, b));
    EXPECT_FALSE(ArrayEq(a, 1, b));
}

TEST(ArrayEqTest, WorksForTwoDimensionalArrays)
{
    const char a[][3] = {"hi", "lo"};
    const char b[][3] = {"hi", "lo"};
    const char c[][3] = {"hi", "li"};

    EXPECT_TRUE(ArrayEq(a, b));
    EXPECT_TRUE(ArrayEq(a, 2, b));

    EXPECT_FALSE(ArrayEq(a, c));
    EXPECT_FALSE(ArrayEq(a, 2, c));
}

// Tests ArrayAwareFind().

TEST(ArrayAwareFindTest, WorksForOneDimensionalArray)
{
    const char a[] = "hello";
    EXPECT_EQ(a + 4, ArrayAwareFind(a, a + 5, 'o'));
    EXPECT_EQ(a + 5, ArrayAwareFind(a, a + 5, 'x'));
}

TEST(ArrayAwareFindTest, WorksForTwoDimensionalArray)
{
    int a[][2] = {{0, 1}, {2, 3}, {4, 5}};
    const int b[2] = {2, 3};
    EXPECT_EQ(a + 1, ArrayAwareFind(a, a + 3, b));

    const int c[2] = {6, 7};
    EXPECT_EQ(a + 3, ArrayAwareFind(a, a + 3, c));
}

// Tests CopyArray().

TEST(CopyArrayTest, WorksForDegeneratedArrays)
{
    int n = 0;
    CopyArray('a', &n);
    EXPECT_EQ('a', n);
}

TEST(CopyArrayTest, WorksForOneDimensionalArrays)
{
    const char a[3] = "hi";
    int b[3];
#ifndef __BORLANDC__ // C++Builder cannot compile some array size deductions.
    CopyArray(a, &b);
    EXPECT_TRUE(ArrayEq(a, b));
#endif

    int c[3];
    CopyArray(a, 3, c);
    EXPECT_TRUE(ArrayEq(a, c));
}

TEST(CopyArrayTest, WorksForTwoDimensionalArrays)
{
    const int a[2][3] = {{0, 1, 2}, {3, 4, 5}};
    int b[2][3];
#ifndef __BORLANDC__ // C++Builder cannot compile some array size deductions.
    CopyArray(a, &b);
    EXPECT_TRUE(ArrayEq(a, b));
#endif

    int c[2][3];
    CopyArray(a, 2, c);
    EXPECT_TRUE(ArrayEq(a, c));
}

// Tests NativeArray.

TEST(NativeArrayTest, ConstructorFromArrayWorks)
{
    const int a[3] = {0, 1, 2};
    NativeArray<int> na(a, 3, RelationToSourceReference());
    EXPECT_EQ(3U, na.size());
    EXPECT_EQ(a, na.begin());
}

TEST(NativeArrayTest, CreatesAndDeletesCopyOfArrayWhenAskedTo)
{
    typedef int Array[2];
    Array *a = new Array[1];
    (*a)[0] = 0;
    (*a)[1] = 1;
    NativeArray<int> na(*a, 2, RelationToSourceCopy());
    EXPECT_NE(*a, na.begin());
    delete[] a;
    EXPECT_EQ(0, na.begin()[0]);
    EXPECT_EQ(1, na.begin()[1]);

    // We rely on the heap checker to verify that na deletes the copy of
    // array.
}

TEST(NativeArrayTest, TypeMembersAreCorrect)
{
    StaticAssertTypeEq<char, NativeArray<char>::value_type>();
    StaticAssertTypeEq<int[2], NativeArray<int[2]>::value_type>();

    StaticAssertTypeEq<const char *, NativeArray<char>::const_iterator>();
    StaticAssertTypeEq<const bool(*)[2], NativeArray<bool[2]>::const_iterator>();
}

TEST(NativeArrayTest, MethodsWork)
{
    const int a[3] = {0, 1, 2};
    NativeArray<int> na(a, 3, RelationToSourceCopy());
    ASSERT_EQ(3U, na.size());
    EXPECT_EQ(3, na.end() - na.begin());

    NativeArray<int>::const_iterator it = na.begin();
    EXPECT_EQ(0, *it);
    ++it;
    EXPECT_EQ(1, *it);
    it++;
    EXPECT_EQ(2, *it);
    ++it;
    EXPECT_EQ(na.end(), it);

    EXPECT_TRUE(na == na);

    NativeArray<int> na2(a, 3, RelationToSourceReference());
    EXPECT_TRUE(na == na2);

    const int b1[3] = {0, 1, 1};
    const int b2[4] = {0, 1, 2, 3};
    EXPECT_FALSE(na == NativeArray<int>(b1, 3, RelationToSourceReference()));
    EXPECT_FALSE(na == NativeArray<int>(b2, 4, RelationToSourceCopy()));
}

TEST(NativeArrayTest, WorksForTwoDimensionalArray)
{
    const char a[2][3] = {"hi", "lo"};
    NativeArray<char[3]> na(a, 2, RelationToSourceReference());
    ASSERT_EQ(2U, na.size());
    EXPECT_EQ(a, na.begin());
}

// Tests SkipPrefix().

TEST(SkipPrefixTest, SkipsWhenPrefixMatches)
{
    const char *const str = "hello";

    const char *p = str;
    EXPECT_TRUE(SkipPrefix("", &p));
    EXPECT_EQ(str, p);

    p = str;
    EXPECT_TRUE(SkipPrefix("hell", &p));
    EXPECT_EQ(str + 4, p);
}

TEST(SkipPrefixTest, DoesNotSkipWhenPrefixDoesNotMatch)
{
    const char *const str = "world";

    const char *p = str;
    EXPECT_FALSE(SkipPrefix("W", &p));
    EXPECT_EQ(str, p);

    p = str;
    EXPECT_FALSE(SkipPrefix("world!", &p));
    EXPECT_EQ(str, p);
}

// Tests ad_hoc_test_result().

class AdHocTestResultTest : public testing::Test
{
protected:
    static void SetUpTestCase()
    {
        FAIL() << "A failure happened inside SetUpTestCase().";
    }
};

TEST_F(AdHocTestResultTest, AdHocTestResultForTestCaseShowsFailure)
{
    const testing::TestResult &test_result = testing::UnitTest::GetInstance()
                                                 ->current_test_case()
                                                 ->ad_hoc_test_result();
    EXPECT_TRUE(test_result.Failed());
}

TEST_F(AdHocTestResultTest, AdHocTestResultTestForUnitTestDoesNotShowFailure)
{
    const testing::TestResult &test_result =
        testing::UnitTest::GetInstance()->ad_hoc_test_result();
    EXPECT_FALSE(test_result.Failed());
}
